Dogs & Co has endeavoured to compile a comprehensive list of plants known to be toxic to dogs. However, we assume no liability for the content of this list. While we have tried to be accurate, this is in no way a complete list of all poisonous/toxic plants. It is intended only as a guide.
If you believe that your dog may have eaten or come into contact with any of these plants, or indeed any plant not on the list and is showing any kind of reaction, it is vitally important that you contact your vet as soon as possible for advice and treatment. If your dog is showing a bad reaction, transport him to the vet immediately and get someone to telephone ahead, giving details of his condition and your suspicions.
Plants which can be potentially fatal are highlighted in red, whilst plants that can cause serious problems are highlighted in purple.
Common Name |
Botanical Name |
Details of reaction if known |
| Aconite (roots, foliage, seeds)(other names include monkshood, mousebane, wolfsbane) | aconitum species | Toxic if eaten, causing nausea and vomiting. May also affect cardiac function - increased heart rate. |
| African violet (leaves) | saintpaulia ionantha | |
| Algae (Blue Green) | cyanobacteria | Weakness, staggering, difficulty in breathing, convulsions and death. |
| Almond (seed) | Diarrhoea, vomiting, abdominal pain. | |
| Alocasia species (all parts) | Irritation to the skin, mouth and tongue. Throat swelling. Breathing difficulties, burning pain and stomach upset. | |
| Aloe vera | aloe vera | Abdominal cramping, diarrhoea, red urine. Skin irritation from latex. |
| Amaryllis (bulbs) | hippeastrum species | Upset stomach, hyperactivity, lethrargy, coma, shock. Can be fatal. |
| America Yew | Breathing problems, trembling, weakness, heart problems, stomach upset, very sudden death. | |
| Andromeda Japonica | pieris japonica | Vomiting, diarrhoea, hyper-salivation, weakness, coma, hypotension, CNS depression, cardiovascular collapse and death. |
| Anemone species (all parts) | Diarrhoea, vomiting, skin irritation. | |
| Angel wings | caladium | Mouth irritation, stomach upset, asphyxiation, tremors, seizures, death. |
| Angels' trumpets | brugmansia species | Toxic if eaten, causing nausea and vomiting. |
| Apple (seeds) | malus species | Seeds contain Cyanide. Varied toxic effects. |
| Apple leaf croton | ||
| Apricot (kernels) | prunus armeniaca | Kernals contain Cyanide. Can be fatal. |
| Arborvitae | thuja species | Harmful if eaten in quantity. May cause a skin allergy. |
| Arrow grasses (leaves) | triglochin species | |
| Asparagus fern | asparagus setaceus | Contains a wide variety of poisoning, resulting in a large range of symptoms. |
| Autumn crocus | colchicum autumnale | Vomiting, nervous excitement. May cause dermatitis. |
| Avocado (fruit and pith) | persea americana | Diarrhoea, vomiting, laboured breathing. Can be fatal. |
| Azalea (all parts) | rhododendron occidentale | Nausea, vomiting, depression, difficulty breathing and coma. Can be fatal if eaten in large enough quantities. |
| Baby's breath | gypsophila paniculata | |
| Balsam pear | Diarrhoea, vomiting, abdominal pain. | |
| Barilla (leaves and stems) | salsola soda | |
| Bird of paradise (fruit and seeds) | strelitzia reginae | Gastrointestinal tract affected by the plant toxins. Vomiting, abdominal pains, cramps, tremors, abnormal heart rate and respiratory rhythm and/or kidney problems. |
| Bittersweet | celastrus | Toxic if eaten, causing nausea and vomiting. |
| Black Locust | robinia pseudoacacia | Staggering, paralysis - mainly affecting horses, cattle, sheep and poultry. |
| Bleeding heart (foliage and roots) | dicentra formosa | Poisonous in large amounts. Contains convulsants. May also cause dermatitis. |
| Bluebell | hyacinthoides | Harmful if eaten in quantity. |
| Box (leaves) | buxus sempervirens | |
| Boxwood (leaves) | hebe odora | Upset stomach, heart failure, excitability or lethargy. May also cause dermatitis. |
| Bracken | pteridium aquilinum | Thiamine deficiency, acute haemorrhagic syndrome, blindness, tumours. |
| Brocolli | brassica oleracea | Haemolytic anaemia, goitre, possible reduced fertility. |
| Broom | cytisus species | Harmful if eaten in quantity. |
| Brussells sprouts | brassica oleracea | Haemolytic anaemia, goitre, possible reduced fertility. |
| Buckeyes (nuts and immature growths) | aesculus species | Harmful if eaten in quantity. |
| Buddhist pine | ||
| Burning bush | kochia scoparia | Toxic if eaten, causing nausea and vomiting. May cause a skin allergy. |
| Buttercup | ranunculus species | Juice may severely injure the digestive system. May also cause dermatitis. |
| Cabbage | brassica oleracea | Haemolytic anaemia, goitre, possible reduced fertility. |
| Caladium | caladium species | Mouth irritation, stomach upset, asphyxiation, tremors, seizures, death. |
| Calamondim Orange | ||
| Calico bush | kalmia species | Harmful if eaten in quantity. |
| Calla lily (leaves) | zantedeschia species | Stomach upset, mouth irritation, asphyxiation, seizures, death. |
| Caper spurge | euphorbia lathyris | Diarrhoea, abdominal cramps, delirium. Sap can cause irritation and if rubbed in the eyes, blindness. May also cause dermatitis. |
| Cardinal flower | lobelia cardinalis | |
| Castor beans (leaves and seeds) | ricinus communis | Nausea, abdominal pain, bloody diarrhoea, tenesmus (a distressing but ineffectual urge to evacuate the rectum or bladder), dehydration, shortness of breath, excessive thirst, weakness, muscle twitching, convulsions, coma. A single rosary pea or one or two castor beans can be fatal. |
| Cauliflower | brassica oleracea | Haemolytic anaemia, goitre, possible reduced fertility. |
| Ceriman | monstera deliciosa | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. |
| Chenille plant | acalypha hispida | |
| Cherry (kernals) | prunus species | Kernals contain Cyanide. Can be fatal |
| Cherry laurel | prunus laurocerasus | Harmful if eaten in quantity. |
| China berry | melia azedarach | |
| Chinese evergreen | aglaonema | |
| Choke cherry (leaves, seed pits, stems and bark) | prunus virginiana | Kernals contain Cyanide. Can be fatal. |
| Christmas rose (leaves and roots) | helleborus niger | Harmful if eaten in quantity. Upset stomach, diarrhoea. Seizures, convulsions, disorientation. |
| Chrysanthemum (leaves and stems) | chrysanthemum species | May cause dermatitis. |
| Cineraria | senecio species | |
| Clematis | clematis armandii | Gastrointestinal tract and nervous system affected by plant toxins. May cause dermatitis. |
| Climbing lily | ||
| Cocoa husks or mulch | Similar toxic affects to that of chocolate - hyperactivity, increased heart rate. Can kill if enough is eaten. | |
| Colodium | Swollen mouth, tongue pain, sore lips. | |
| Columbine | ||
| Cordatum | ||
| Coriaria | Convulsions. | |
| Corn cockle (seeds) | agrostemma species | Harmful if eaten in quantity. |
| Corn flower | ||
| Corn plant | dracaena species | Vomiting and diarrhoea. |
| Corydalis | ||
| Creeping Charlie | glecoma hederacea L | Sweating, drooling though usually not fatal. |
| Creeping fig | ||
| Crocus | anemone species | Stomach upset, liver failure, lethargy, shock, death. |
| Crotalaria (seed) | ||
| Croton | codiaeum species | |
| Crowfoot | anunculus species | |
| Crown of thorns | ||
| Crown vetch | coronilla varia | |
| Cuban laurel | ||
| Cuckoo pint | arum maculatum | Toxic if eaten, causing nausea and vomiting. May cause a skin allergy. |
| Cutleaf philodendron | ||
| Cycads | encephalartos species | |
| Cyclamen | cyclamen species | Gastrointestinal tract affected. Convulsions and paralysis. |
| Daffodil (bulbs) | narcissus species | Nausea, vomiting, diarrhoea, tremors, seizures, lethargy, heart failure, coma. May also cause dermatitis. Can be fatal. |
| Daphne (bark and leaves) | daphne species | Gastrointestinal tract and kidneys affected. May cause dermatitis. |
| Datura | brugmansia species | Toxic if eaten, causing nausea and vomiting |
| Deadly nightshade | atropa belladonna | Toxic if eaten, causing nausea and vomiting. |
| Death camas (bulb) | ||
| Delphinium (seeds and young plants) | delphinium species | Digestive upset, nervousness, depression. Cardiovascular system affected. May cause dermatitis. Can be fatal. |
| Devil's fig | solanum hispidium | Harmful if eaten in quantity. |
| Devils' ivy | Upset stomach, convulsions, asphyxiation, death. | |
| Dieffenbachia | dieffenbachia species | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, deizures, loss of balance, asphyxiation. Can be fatal. |
| Dologeton | ||
| Dracaena palm | ||
| Dragon tree | dracaena species | Vomiting and diarrhoea. |
| Dumb cane | dieffenbachia amaena | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, deizures, loss of balance, asphyxiation. Can be fatal. |
| Dutchman's breeches | Poisonous in large amounts. Contains convulsant, including isoquinoline. May also cause dermatitis. | |
| Dwarf morning glory | convolvulus tricolor | Harmful if eaten in quantity. |
| Easter lily | lilium longiflorum | Upset stomach, kidney failure, weakness. Especially poisonous to cats. |
| Echium | echium species | Harmful if eaten in quantity. May cause a skin allergy. |
| Egg plant (not fruit) | ||
| Elaine | ||
| Elder (leaves, root and bark) | sambuccus species | Nausea and vomiting. |
| Elderberry | sambuccus canadensis | Nausea and vomiting. |
| Elephant ears | bergenia species | Intense burning, irritation and swelling of the mouth and throat. If tongue swells enough to block airway, it can be fatal. |
| Emerald cane | Swollen mouth, tongue pain, sore lips. | |
| Emerald duke | ||
| Emerald feather | ||
| English holly | ||
| English ivy (berries and leaves) | hedera helix | Stomach irritation, hyperactivity, diarrhoea, drooling, fever, increased thirst, dilated pupils, staggering, breathing difficulties, coma, death. |
| English yew | taxus baccata | Dizziness, dry mouth and mydriasis (excessive and prolonged dilation of the pupils) develop within one hour, followed by abdominal cramping, drooling and vomiting. Foliage is more fatal than berries. Death can be sudden, without warning or symptoms. |
| Eucalyptus | ||
| Euonymus | euonymus species | Harmful if eaten in quantity |
| European spindle | euonymus europaeus | Harmful if eaten in quantity. |
| False hellebore (roots, seeds and leaves) | veratrum album | Toxic if eaten, causing nausea and vomiting. |
| Fava bean (seed) | ||
| Ficus cuban laurel | Diarrhoea, vomiting, abdominal pain. | |
| Fiddle leaf | ficus lyrata | Upset stomach, irritated skin. |
| Finger cherry (fruit) | ||
| Flannel flower | phylica plumosa | Harmful if eaten in quantity. |
| Flax | linum usitatissimum | Harmful if eaten in quantity. |
| Foxglove (leaves and seeds) | digitalis species | Stomach upset, tremors, seizures, lethargy, collapse, heart failure, death. |
| Fritillary | fritillaria species | |
| Fruit salad plant | monstera deliciosa | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. |
| Gaultheria | gaulthera mucronata | Harmful if eaten in quantity. |
| Geranium | geranium species | |
| German ivy (berries and leaves) | delairea odorata | Gastrointestinal tract affected. May cause dermatitis. |
| German primula | Toxic if eaten. May cause skin allergy. | |
| Giant Dumb Cane | ||
| Glacier Ivy (leaves and berries) | ||
| Glory Ivy | gloriosa superba | Toxic if eaten, causing nausea and vomiting. |
| Golden chain (seed capsules) | laburnum | Toxic if eaten, causing nausea and vomiting. |
| Granny's bonnets | aquilegia vulgaris | Harmful if eaten in quantity. |
| Hahn's self branching ivy | ||
| Heartland philodendron | ||
| Heavenly bamboo | nandina domestica | |
| Heliotrope | heliotropum arborescens | |
| Hellebores | helleborus species | |
| Hemlock (all parts, root and root stalk) | tsuga species | Dilated pupils, frothing at the mouth, spasms, restlessness, convulsions and death within 15 minutes to 2 hours. |
| Henbane | hyposcyamus niger | Toxic if eaten, causing nausea and vomiting. |
| Hibiscus | hibiscus species | |
| Holly (berries) | ilex species | Upset stomach, tremors, seizures, loss of balance. |
| Horse chestnut (nuts and leaves) | aesculus hippocastanum | Harmful if eaten in quantity. |
| Hurricane plant (bulb) | monstera deliciosa | Varied toxic effects. Causes diarrhoea and oral irritation if eaten. May cause dermatitis. |
| Hyacinth (bulbs) | hyacinthus orientalis | Harmful if eaten in quantity. May cause a skin allergy. |
| Hydrangea (leaves and buds) | hydrangea species | Seizures, dizziness, rapid breathing, irritation and inflammation of the digestive tract, bloody diarrhoea/stools. |
| Impatiens (Busy Lizzie) | ||
| Indian Rubber Plant | ||
| Indian Tobacco | ||
| Indian Turnip | ||
| Iris (roots) | iris species | Severe digestive upset. May cause dermatitis. |
| Ivy (entire plant) | hedera helix | Harmful if eaten in quantity |
| Jack in the pulpit | arisaema species | Causes burning to the mouth. Can cause hallucinations. |
| Japanese plum | Diarrhoea, vomiting and abdominal pain. | |
| Japanese show lily | ||
| Japanese spindle | euonymus sieboldianus | Harmful if eaten in quantity. |
| Japanese Yew | taxus species | Dizziness, dry mouth and mydriasis (excessive and prolonged dilation of the pupils) develop within one hour, followed by abdominal cramping, drooling and vomiting. Foliage is more fatal than berries. Death can be sudden, without warning or symptoms. |
| Jasmine | Convulsions, death. | |
| Java beans | ||
| Jerusalem cherry (immature growths) | solanum pseudocapsicum | Gastrointestinal tract affected. May cause dermatitis. |
| Jessamine (berries and sap) | cestrum species | Digestive disturbance. Gastrointestinal tract and nervous system affected. Can be fatal. |
| Jimson weed (Thorn apple) | datura stramonium | Rapid pulse, rapid breathing, dilated pupils, restlessness, nervousness, twitching, convulsions, abnormal thirst, distorted sight, delirium, incoherance, frequent urination, diarrhoea, depression, weight loss, weak pulse, coma. Can be fatal. |
| Johnsongrass (leaves and stems, especially young plants) | sorghum halepense | Breathing problems, severe anxiety, convulsions, coma, death. Intravenous antidote exists. |
| Jonquil (bulb) | narcissus species | Nausea, vomiting, diarrhoea, tremors, seizures, lethargy, heart failure, coma. May also cause dermatitis. Can be fatal. |
| Juniper | juniperus species | |
| Kalanchoe | kalanchoe species | Depression, rapid breathing, teeth grinding, ataxia (stumbling/lack of co-ordination), paralysis. |
| Kale | brassica oleracea | Haemolytic anaemia, goitre, possible reduced fertility. |
| Kingcup | caltha palustris | Harmful if eaten in quantity. |
| Laburnum (leaves and seeds) | laburnum species | Toxic if eaten, causing nausea and vomiting. |
| Lantana | lantana camara | Toxic if eaten, causing nausea and vomiting, sluggishness, weakness, bloody diarrhoea. In severe cases, death may occur in 2 to 4 days. |
| Larkspur (young plants and seeds) | delphinium species | Digestive upset, nervousness, depression. Cardiovascular system affected. May cause dermatitis. Can be fatal. |
| Laurel | prunus species | Harmful if eaten in quantity |
| Lenton rose | helleborus orientalis | Harmful if eaten in quantity |
| Leopard lily | belamcanda species | Toxic if eaten, causing nausea and vomiting. May cause a skin allergy. |
| Leyland cypress | cupressocyparis leylandii | Harmful if eaten in quantity. May cause a skin allergy. |
| Lily | lilium species | Upset stomach, kidney failure, weakness. Especially poisonous to cats. |
| Lily of the valley (leaves, flowers and roots) | convallaria species | Toxic if eaten, causing nausea and vomiting. |
| Lily of the valley bush | pieris japonica | Vomiting, diarrhoea, hyper-salivation, weakness, coma, hypotension, CNS depression, cardiovascular collapse and death. |
| Lobelia | lobelia species | Harmful if eaten in quantity. May cause a skin allergy. |
| Locust | robinia species | Nausea and weakness. |
| Lupin (leaves and seeds) | lupinus species | Harmful if eaten in quantity. |
| Majesty | Swollen mouth, tongue pain, sore lips. | |
| Mallow | lavatera species | Harmful if eaten in quantity. |
| Mandrake (roots, foliage, unripe fruit) | ||
| Maple tree | acer species | |
| Marijuana | cannabis sativa | Contains hallucinogens. |
| Marsh marigold | caltha palustris | Harmful if eaten in quantity. |
| May apple (apples, roots and foliage) | podophyllum peltatum | Severe diarrhoea. Nervous system affected. |
| Meadow rue | thalistrum delavayi | Harmful if eaten in quantity. |
| Medicine plant | ||
| Mescal Bean | ||
| Mezereon | daphne mezereum | Gastrointestinal tract and kidneys affected. May cause dermatitis. |
| Milkweed | ascepias syriaca | Harmful if eaten in quantity. May cause a skin allergy. |
| Mistletoe (berries) | phoradendron flavescens | Gastrointestinal tract affected. May cause dermatitis. If eaten by a puppy, one or two berries can be fatal. |
| Monkshood | aconitum napellus | Toxic if eaten, causing nausea and vomiting. May also affect cardiac function - increased heart rate. |
| Morning glory (seeds and roots) | ipomea species | Harmful if eaten in quantity. |
| Moroccan broom | cytisus battandieri | Harmful if eaten in quantity. |
| Mother-in-law's tongue (leaves) | dieffenbachia amaena | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, seizures, loss of balance, asphyxiation. Can be fatal. |
| Mountain laurel | kalmia latifolia | Harmful in eaten in quantity. |
| Mushrooms (toadstools) | ||
| Naked ladies | hippeastrum species | Upset stomach, hyperactivity, lethrargy, coma, shock. Can be fatal. |
| Narcissus (bulb) | narcissus species | Nausea, vomiting, diarrhoea, tremors, seizures, lethargy, heart failure, coma. May also cause dermatitis. Can be fatal. |
| Needlepoint ivy (berries and leaves) | Gastrointestinal tract affected. May cause dermatitis. | |
| Nephthytis (all parts) | Swollen mouth, tongue pain, sore lips. | |
| Nerine | nerine bowdenii | |
| Nightshades | solanum species | Intense digestive disturbances. Hallucinations, drowsiness, numbness, dilated pupils, trembling, laboured breathing, nasal discharge, rapid heartbeat, weak pulse, ataxia (stumbling/lack of co-ordination), paralysis or severe shaking of the hind legs, bloat. Can be fatal. |
| Oak tree (foliage and acorns) | quercus species | Affects kidneys. Symptoms appear after several days. |
| Oats (all parts) | avena sativa | Breathing difficulty, skin irritation, paralysis, convulsions, and on rare occasions, death. |
| Oleander | nerium oleander | Excitability or lethargy. Produces severe digestive upset. Heart/cardiovascular system affeted by the glycosides oleandrin, oleandroside and nerioside. May also cause dermatitis. Extremely poisonous and can cause death. |
| Onion | allium species | Causes anaemia. Onions should not be fed to dogs in ANY form. |
| Oriental lily | ||
| Paspalum (seeds) | paspalum species | Dermatitis. |
| Pasque flower | pulsatilla vulgaris | Harmful if eaten in quantity. |
| Peace Lily | spathiphyllum species | Gastrointestinal tract affected. May cause dermatitis. |
| Peach (stones and leaves) | prunus persica | Stones contain Cyanide. Diarrhoea, vomiting and abdominal pain. Can be fatal. |
| Pear (seeds) | ||
| Pencil cactus | opuntia leptocaulis | |
| Peony (roots) | paeonia species | Stomach upset, staggering, tremors, seizures, heart failure, death. |
| Periwinkle | Hallucinogens | |
| Peruvian lily | chlidanthus fragans | Harmful if eaten in quantity. May cause a skin allergy. |
| Philodendron (leaves) | philodendron species | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. |
| Pigweed, Redroot (leaves, stems and roots) | amaranthus retroflexus | Troubled breathing, trembling, weakness, coma, death. |
| Pineapple broom | cytisus battandieri | Harmful if eaten in quantity. |
| Poinsettia (leaves, stem and sap) | euphorbia pulcherrima | Diarrhoea, abdominal cramps, delirium. Sap can cause irritation and if rubbed in the eyes, blindness. May also cause dermatitis. |
| Poison hemlock | conium maculatum | Nervous system affected. May cause dermatitis. Can be fatal. |
| Poison ivy (leaves, bark and fruit) | toxicodendron radicans | Poisonous. Can cause severe, blistering dermatitis if the plant comes into contact with the skin. |
| Poison oak (leaves, bark and fruit) | toxicodendron | Poisonous. Can cause severe, blistering dermatitis if the plant comes into contact with the skin. |
| Poison sumac | toxicodendron vernix | Poisonous, Can cause severe, blistering dermatitis if the plant comes into contact with the skin. |
| Pokeroot | phytolacca americana | Toxic if eaten, causing nausea and vomiting |
| Pokeweed | phytolacca americana | Toxic if eaten, causing nausea and vomiting. |
| Poppy (unripe seedpod) | papayer species | Harmful if eaten in quantity. |
| Potato (green skin and sprouts) | solanum tuberosum | Intense digestive disturbances. Hallucinations, drowsiness, numbness, dilated pupils, trembling, laboured breathing, nasal discharge, rapid heartbeat, weak pulse, ataxia (stumbling/lack of co-ordination), paralysis or severe shaking of the hind legs, bloat. Can be fatal. |
| Prickly poppy | argemone mexicana | Harmful if eaten in quantity. |
| Primrose (leaves) | primula vulgaris | Stomach upset. May cause dermatitis. |
| Privet (leaves) | ligustrum species | Harmful if eaten in quantity. |
| Ragwort | senecio species | Causes kidney failure and liver damage which is irreversible. Minute doses fatal, often wrongly diagnosed. |
| Raisins | Causes kidney failure. Can be fatal | |
| Rape | brassicus napus | Haemolytic anaemia, blindness, damage to nervous system, digestive disorders, breathing problems. |
| Red-ink plant | phytolacca americana | Toxic if eaten, causing nausea and vomiting. |
| Rhododendron | rhododendron species | Nausea, vomiting, depression, difficulty in breathing and coma. Can be fatal. |
| Rhubarb (leaves) | rheum species | Staggering, trembling, breathing difficulties, weakness, diarrhoea, increased thirst and urination. Large amounts of raw or cooked leaves can cause convulsions and coma. Can be fatal. |
| Rose periwinkle | catharanthus roseus | Harmful if eaten in quantity. |
| Rosebay | rhododendron aureum | Toxic if eaten, causing nausea and vomiting. |
| Rue | ruta graveolens | Toxic if eaten, causing nausea and vomiting. May cause a skin allergy. |
| Sago palm | cycas revoluta | Can be fatal |
| Savin | juniperus sabina | Harmful if eaten in quantity |
| Schefflera | brassaia actinophylla | Harmful if eaten in quantity. May cause a skin allergy. |
| Silkweed | asclepias species | Harmful if eaten in quantity. May cause a skin allergy. |
| Snowdrops | galanthus species | |
| Soloman's seal | polygonatum | Harmful if eaten in quantity. |
| Spider plant | chlorophytum species | May cause vomiting and drooling. |
| Spruce Tree | picea species | |
| Spurge | euphorbia species | Harmful if eaten in quantity. May cause a skin allergy. |
| Squill | scilla species | Harmful if eaten in quantity. |
| St John's wort | hypericum perforatum | Harmful if eaten in quantity. |
| Starflower | smilacina stellata | Harmful if eaten in quantity. |
| Star of Bethlehem (bulbs) | ornithogalum species | Harmful if eaten in quantity. |
| String of pearls/beads | senecio rowleyanus or herreianus | |
| Sweet pea (stem) | lathyrus odoratus | Harmful if eaten in quantity |
| Swiss cheese plant | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. | |
| Taro vine | Causes diarrhoea and oral irritation if eaten. May cause dermatitis. | |
| Tiger lily | lilium | Upset stomach, kidney failure, weakness. Especially poisonous to cats. |
| Tobacco plant (leaves) | micotiana | Harmful if eaten in quantity. |
| Tobira | pittosporum tobira | |
| Tomato plant (green fruit, stem and leaves) | lycopersicon lycopersicum | |
| Tulip | tulipa species | Harmful if eaten in quantity. May cause a skin allergy. |
| Umbrella plant | schlefflera species | Toxic if eaten, causing vomiting, diarrhoea, respiratory problems, kidney faillure, tremors and abdominal pain. |
| Varnish tree | toxicodendron vernicifluum | Poisonous. Can cause severe blistering dermatitis if the plant comes into contact with the skin. |
| Walnut (green hull juice and fruit) | juglans nigra | Gastrointestinal tract affected. Nuts considered poisonous to dogs. |
| Water hemlock | cicuta maculata | Dilated pupils, frothing at the mouth, spasms, restlessness, convulsions and death within 15 minutes to 2 hours. |
| Wax tree | toxicodendron succedaneum | Poisonous. Can cause severe, blistering dermatitis if the plant comes into contact with the skin. |
| Weeping fig | ficus species | Upset stomach, irritated skin. |
| Wild cherry tree (twigs and foliage) | prunus avium | Gasping, excitment, prostration (complete mental and/or physical exhaustion). Can be fatal. |
| Windflower | anemone species | Stomach upset, liver failure, lethargy, shock, death. |
| Wisteria (pods and seeds) | wisteria | Nausea, repeated vomiting, stomach pains, severe diarrhoea, dehydration and collapse. |
| Wolfsbane | acontium septentrionale | Toxic if eaten, causing nausea and vomiting. May also affect cardiac function - increased heart rate. |
| Woody nightshade | Toxic if eaten, causing nausea and vomiting. | |
| Yarrow | achillea species | |
| Yew (berries and foliage) | taxus species | Dizziness, dry mouth and mydriasis (excessive and prolonged dilation of the pupils) develop within one hour, followed by abdominal cramping, drooling and vomiting. Foliage is more fatal than berries. Death can be sudden, without warning or symptoms. |
| Small pebbles | puppies, in particular, like to pick up small stones to chew on. These can damage the dog's teeth, but worse, some dogs will swallow them and be unable to pass them out the other end. This could result in an expensive operation, or death if a blockage occurs. |
| Water | dogs like to drink out of containers with rainwater in, or even out of the fish pond. Watch this in the summertime, as blue green algae is toxic. |
| Fish ponds | your dog will fall in the pond at some point (they don't know they can't walk on water!!). If the pond doesn't have an easy escape route, think about fencing off the area. |
| Snails | can carry a parasite that causes lungworm in dog's if the snail is eaten. |
| Garden chemicals | use common sense when using these. Keep to areas that the dog has no access to. |
| Sticks | try to discourage your pup or dog from chewing sticks. They could either get into the habit of playing with them (and fetch with a stick can cause nasty throat injuries), or start to eat them and they aren't a good source of fibre!! Some sticks can also be extremely toxic. |
| Cat faeces | Nearly every dog will try to eat cat poo at some point. Apart from being disgusting (according to us humans anyway), it can also be dangerous for the dog. Sometimes cat faeces can contain a parasite that can cause lungworm (particularly from an unwormed cat). |
For additional information on toxic plants (including pictures), you can visit the following websites: