Dog Poisons

Unfortunately there are a great many things around the home, in the garden and on walks that can harm your pet.

This list does not represent a complete list of all poisonous plants and is only intended as a guide. Please contact your veterinary surgeon for advice or treatment immediately if you think your pet has eaten any of the following plants and is showing a bad reaction.

Just like people animals can also have an allergy or sensitivity to specific item, it may have no connection with its general toxicity, so always be vigilant and seek help from a veterinarian if you are worried about your pet’s health.

First is a list of List of common potentially poisonous household and garden substances –as supplied by the VPIS (Veterinary Poisons Information Service). Followed by a table of plants commonly found in around the home and the environment in the UK.

Anticoagulant rodenticides

difenacoum

bromadiolone

brodadiolone

coumatetralyl

Ibuprofen 

Nurofen

Advil

Metaldehyde 

Slug bait

Human oral contraceptives (very low toxicity)

Chocolate / theobromine 

Diclofenac sodium (a similar drug to Ibuprofen)

Salbutamol 

Ventalin inhalers

Alphachloralose rodenticides 

Paraquat 

Wallpaper paste (very low toxicity)

Borax / Boric acid ant killer gels 

Bonemeal 

Glyphosate based herbicides 

Asprin 

Cannabis 

Batteries 

Bendiocarb 

powder ant killers

White spirit / barbecue lighter fluid 

Antifreeze 

Loperamide 

anti-diarrhoea drugs

Bleach 

Pyrethrin-based insecticides 

Creosote 

Temazepam 

Common name 

Botanical name 

Details (if known) 

Aconite (roots, foliage, seeds) 

Aconitum species 

Toxic if eaten, causing nausea and vomiting. May also affect cardiac function – increased heart rate.

African violet (leaves) 

Saintpaulia ionantha 

Aloe vera 

Aloe vera 

Diarrhoea

Amaryllis (bulbs) 

Hippeastrum species 

Upset stomach, hyperactivity, lethargy, coma, shock. Can be fatal. 

Angels’ trumpets 

Brugmansia species 

Toxic if eaten, causing nausea and vomiting.

Angel wings 

Caladium species 

Upset stomach, oral irritation, asphyxiation, tremors, seizures, loss of balance. Can be fatal. 

Apple (seeds) 

Malus species 

Seeds contain cyanide. Varied toxic effects.

Apple leaf croton 

Apricot (kernels) 

Prunus armeniaca 

Kernels contain cyanide. Can be fatal. 

Arborvitae 

Thuja species 

Harmful if eaten in quantity. May cause a skin allergy.

Arrow grasses (leaves) 

Triglochin species 

Bird of paradise (seeds) 

Strelitzia reginae 

Gastrointestinal tract affected by the plant toxins.

Bittersweet 

Celastrus angulatus 

Toxic if eaten, causing nausea and vomiting.

Bleeding heart (foliage, 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, twigs) 

Hebe odora 

Upset stomach, heart failure, excitability or lethargy. May also cause dermatitis.

Bracken 

Pteridium aquilinum 

Thiamine deficiency, acute haemorrhagic syndrome, blindness, tumours

Broom 

Cytisus species 

Buckeyes (nuts & immature growths) 

Aesculus species 

Harmful if eaten in quantity.

Burning bush 

Kochia scoparia 

Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Buttercup 

Ranunculus species 

Juice may severely injure digestive system. May also cause dermatitis.

Caladium 

Caladium species 

Calico bush 

Kalmia species 

Harmful if eaten in quantity.

Calla lily (leaves) 

Zantedeschia species 

(as above)

Caper Spurge 

Euphorbia lathyris 

Asparagus fern 

Asparagus setaceus 

Contains a wide variety of poisons resulting in a large range of symptoms.

Autumn crocus 

Crocus speciosus 

Vomiting, nervous excitement. May cause dermatitis.

Avocado (fruit & pith) 

Persea americana 

Diarrhoea, vomiting, laboured breathing. Can be fatal. 

Azalea (all parts) 

Rhododenron occidentale 

Nausea, vomiting, depression, difficulty breathing and coma. Can be fatal if eaten in large enough quantities. 

Baby’s breath 

Gypsophila paniculata 

Barilla (leaves & stems) 

Salsola soda 

Bird of paradise (seeds) 

Strelitzia reginae 

Gastrointestinal tract affected by the plant toxins.

Bittersweet 

Celastrus angulatus 

Toxic if eaten, causing nausea and vomiting.

Bleeding heart (foliage, 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, twigs) 

Hebe odora 

Upset stomach, heart failure, excitability or lethargy. May also cause dermatitis.

Bracken 

Pteridium aquilinum 

Thiamine deficiency, acute haemorrhagic syndrome, blindness, tumours

Broom 

Cytisus species 

Buckeyes (nuts & immature growths) 

Aesculus species 

Harmful if eaten in quantity.

Burning bush 

Kochia scoparia 

Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Buttercup 

Ranunculus species 

Juice may severely injure digestive system. May also cause dermatitis.

Caladium 

Caladium species 

Calico bush 

Kalmia species 

Harmful if eaten in quantity.

Calla lily (leaves) 

Zantedeschia species 

(as above)

Caper Spurge 

Euphorbia lathyris 

Cardinal flower 

Lobelia cardinalis 

Castor bean (leaves and seeds) 

Ricinus communis 

May cause dermatitis. A single Rosary Pea or one/two Castor bean seeds can be fatal.

Ceriman 

Monstera deliciosa 

Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Chenille Plant 

Acalypha hispida 

Cherry (kernels) 

Prunus species 

Kernels contain cyanide.

Cherry laurel 

Prunus laurocerasus 

Harmful if eaten in quantity.

China Berry 

Melia azedarach 

Chinese evergreen 

Aglaonema 

Christmas rose (leaves, roots) 

Helleborus niger 

Harmful if eaten in quantity.

Chrysanthemum (leaves & stems) 

Chrysanthemum species 

May cause dermatitis.

Cineraria 

Senecio species 

Clematis 

Clematis armandii 

Gastrointestinal tract and nervous system affected by plant toxins. May cause dermatitis.

Cocoa husks or mulch 

Similar toxic effects to that of chocolate – hyperactivity, increased heart rate. Can kill if enough is eaten.

Corn cockle (seeds) 

Agrostemma species 

Harmful if eaten in quantity.

Corn plant 

Dracaena species 

Crocus                                                       Anemone species 

Croton 

Codiaeum species 

Crown vetch 

Coronilla varia 

Cuckoo pint 

Arum maculatum 

Toxic if eaten, causing nausea and vomiting. May cause a skin allergy.

Crowfoot 

Anunculus species 

Cycads 

Encephalartos species 

Cyclamen 

Cyclamen species 

Gastrointestinal tract affected. Convulsions and paralysis.

Daffodil (bulbs) 

Narcissus species 

Nausea, vomiting, diarrhoea. May also cause dermatitis. Can be fatal. 

Daphne 

Daphne species 

Gastrointestinal tract and kidneys affected. May cause dermatitis.

Datura 

Brugmansia species 

Deadly nightshade 

Atropa belladonna 

Toxic if eaten, causing nausea and vomiting.

Delphinium (seeds, young plants) 

Delphinium species 

Harmful if eaten in quantity.

Devil’s fig 

Solanum hispidium 

Harmful if eaten in quantity.

Dieffenbachia 

Dieffenbachia species 

Causes diarrhea and oral irritation if eaten. May cause dermatitis. Tremors, seizures, loss of balance, asphyxiation. Can be fatal. 

Dragon tree 

Dracaena species 

Vomiting and diarrhoea.

Dumb cane 

Dieffenbachia amaena 

Causes diarrhoea and oral irritation if eaten. May cause dermatitis. Tremors, seizures, loss of balance, asphyxiation. Can be fatal. 

Dwarf morning glory 

Convolvulus tricolor 

Harmful if eaten in quantity.

Easter lily 

Lilium longiflorum 

(Especially poisonous to cats).

Echium 

Echium species 

Harmful if eaten in quantity. May cause a skin allergy.

Elder (leaves, root, bark) 

Sambuccus species 

Elderberry 

Sambucus canadensis 

Nausea and vomiting.

Elephant ears 

Bergenia species 

Intense burning, irritation and swelling of the mouth and throat. If tongue swells enough to block air passage can be fatal. 

English ivy (berries & leaves) 

Hedera helix 

Gastrointestinal tract affected. May cause dermatitis.

European spindle 

Euonymus europaeus 

Harmful if eaten in quantity.

False hellebore (roots, seeds, leaves) 

Veratrum album 

Toxic if eaten, causing nausea and vomiting.

Flannel flower 

Phylica plumosa 

Harmful if eaten in quantity.

Flax 

Linum usitatissimum 

Harmful if eaten in quantity.

Foxglove (leaves, seeds) 

Digitalis species 

Toxic if eaten, causing nausea and vomiting.

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 & leaves) 

Delairea odorata 

Gastrointestinal tract affected. May cause dermatitis.

German primula 

Toxic if eaten. May cause skin allergy.

Glory lily 

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.

Heavenly bamboo 

Nandina domestica 

Hellebores 

Helleborus species 

Heliotrope 

Heliotropum arborescens 

Hemlock 

Tsuga species 

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, 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 

Hydrangea species 

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 spindle 

Euonymus sieboldianus 

Harmful if eaten in quantity.

Japanese yew 

Taxus species 

Jessamine (berries & sap) 

Cestrum species 

Digestive disturbance. Gastrointestinal tract and nervous system affected. Can be fatal. 

Jerusalem Cherry 

(immature growths) 

Solanum pseudocapsicum 

Gastrointestinal tract affected. May cause dermatitis.

Jimson weed (Thorn Apple) 

Datura stramonium 

Abnormal thirst, distorted sight, delirium, incoherence, coma, can be fatal.

Juniper 

Juniperus species 

Kalanchoe 

Kalanchoe species 

Depression, rapid breathing, teeth grinding, ataxia, paralysis

Kale 

Brassica oleracea 

Haemolytic anaemia, goitre, possible reduced fertility

Kingcup 

Caltha palustris 

Harmful if eaten in quantity.

Laburnum (leaves, seeds) 

Laburnum anagyroides 

Toxic if eaten, causing nausea and vomiting.

Lantana 

Lantana camara 

Toxic if eaten, causing nausea and vomiting.

Larkspur (young plants & 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 

Harmful if eaten in quantity.

Lily of the valley (leaves, flowers, roots) 

Convallaria species 

Toxic if eaten, causing nausea and vomiting.

Lily of the valley bush 

Pieris japonica 

Lobelia 

Lobelia species 

Harmful if eaten in quantity. May cause a skin allergy.

Locust 

Robinia species 

Nausea and weakness

Lupin (leaves, seeds) 

Lupinus species 

Harmful if eaten in quantity.

Mallow 

Lavatera species 

Harmful if eaten in quantity.

Maple Tree 

Acer species 

Marijuana 

Cannabis sativa 

Contains hallucinogens.

Marsh marigold 

Caltha palustris 

Harmful if eaten in quantity.

May apple (apples, roots, foliage) 

Podophyllum peltatum 

Severe diarrhoea. Nervous system affected.

Meadow rue 

Thalistrum delavayi 

Harmful if eaten in quantity.

Mezereon 

Daphne mezereum 

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, a few berries can be fatal.

Monkshood 

Aconitum napellus 

Digestive upset and nervous excitement. Cardiovascular system affected.

Morning glory (seeds, 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, can be fatal

Mountain laurel 

Kalmia latifolia 

Harmful if eaten in quantity.

Naked ladies 

Colchium species 

Toxic if eaten, causing nausea and vomiting.

Narcissus 

Narcissus (bulbs) 

Nausea, vomiting, diarrhoea. May cause dermatitis. Can be fatal.

Needlepoint ivy (berries & leaves) 

Gastrointestinal tract affected. May cause dermatitis.

Nerine 

Nerine bowdenii 

Nightshades 

Solanum species 

Intense digestive disturbances. Can be fatal. 

Oak tree (foliage & acorns) 

Quercus species 

Affects kidneys. Symptoms appear after several days.

Oleander 

Nerium oleander 

Affects the heart, produces severe digestive upset, extremely poisonous. May cause dermatitis. Can be fatal. 

Onion 

Allium species 

Causes anemia. Onions should not be fed to dogs in any form. 

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 & leaves) 

Prunus persica 

Contain cyanide.

Pencil cactus 

Opuntia leptocaulis 

Peony (roots) 

Paeonia species 

Peruvian lily 

Chlidanthus fragans 

Harmful if eaten in quantity. May cause a skin allergy.

Philodendron 

Philodendron species (leaves) 

Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Pineapple broom 

Cytisus battandieri 

Harmful if eaten in quantity.

Poinsettia (leaves, stems & sap) 

Euphorbia pulcherrima 

Diarrhea, abdominal cramps, delirium. Sap can cause irritation and if rubbed in eyes, blindness. May also cause dermatitis.

Poison hemlock 

Conium maculatum 

Nervous system affected. May cause dermatitis. Can be fatal. 

Poison ivy (leaves, bark & fruit) 

Toxicodendron radicans 

Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Poison oak (leaves, bark & fruit) 

Toxicodendron 

May cause dermatitis.

Poison sumac 

Toxicodendron vernix 

Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Pokeroot 

Phytolacca americana 

Toxic if eaten, causing nausea and vomiting.

Pokeweed 

Phytolacca americana 

Toxic if eaten, causing nausea and vomiting.

Poppy (unripe seedpod) 

Papaver species 

Harmful if eaten in quantity.

Potato ( green skin and sprouts)

Solanum tuberosum 

 

Prickly poppy 

Argemone mexicana 

Harmful if eaten in quantity.

Primrose (leaves) 

Primula vulgaris 

Upset stomach. 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 breathing and coma. Can be fatal. 

Rhubarb (leaves) 

Rheum species 

Large amounts of raw or cooked leaves can cause convulsions and coma. Can be fatal. 

Rosebay 

Rhododendron aureum 

Toxic if eaten, causing nausea and vomiting.

Rose periwinkle 

Catharanthus roseus 

Harmful if eaten in quantity.

Rue 

Ruta graveolens 

Toxic if eaten, causing nausea and vomiting. May

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.

Snowdrops 

Galanthus species 

Solomon’s seal 

Polygonatum 

Harmful if eaten in quantity.

Spider plant 

Chlorophytum species 

May cause vomiting and salivation.

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.

Star-of-Bethlehem (bulbs) 

Ornithogalum species 

Harmful if eaten in quantity.

Starflower 

Smilacina stellata 

Harmful if eaten in quantity.

St Johns Wort 

Hypericum perforatum 

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 

Monstera deliciosa 

Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Taro vine 

Monstera deliciosa 

Causes diarrhoea and oral irritation if eaten. May cause dermatitis.

Tiger lily 

Lilium 

(Especially poisonous to cats)

Tobacco plant (leaves) 

Nicotiana 

Harmful if eaten in quantity.

Tobira 

Pittosporum tobira 

Tomato plant (green fruit, stem & leaves) 

Lycopersicon lycospersicum 

Tulip 

Tulipa species 

Harmful if eaten in quantity. May cause a skin allergy.

Umbrella plant 

Schlefflera species 

Toxic if eaten, causing vomiting, diarrhoea.

Varnish tree 

Toxicodendron vernicifluum 

Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Walnut (green hull juice) 

Juglans nigra 

Water hemlock 

Cicuta maculata 

Violent painful convulsions. Can be fatal. 

Wax tree 

Toxicodendron succedaneum 

Poisonous. Can cause severe blistering dermatitis if they come into contact with skin.

Weeping fig 

Ficus species 

Wild cherry tree (twigs & foliage) 

Prunus avium 

Gasping, excitement, prostration. Can be fatal. 

Windflower 

Anemone species 

Harmful if eaten in quantity.

Wisteria (pods, seeds) 

Wisteria 

Nausea, repeated vomiting, stomach pains, severe diarrhoea, dehydration and collapse.

Wolfsbane 

Aconitum septentrionale 

Toxic if eaten, causing nausea and vomiting.

Woody nightshade 

Toxic if eaten, causing nausea and vomiting.

Yarrow 

Achillea species 

Yew (berries & foliage) 

Taxus species 

Dizziness, dry mouth and mydriasis develop within one hour, followed by abdominal cramping, salivation and vomiting. Foliage is more fatal than berries, death can be sudden without warning or symptoms.

 

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