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Simply the Pets

Foods, Plants & Household Substances your dog should avoid

Are you aware of how many plants, common household items and foods which can make our furry four-legged friends poorly?

With varying side effects and symptoms, it is well worthwhile knowing what could make your pup poorly and how to act if you suspect they have eaten something they shouldn't or have been poisoned.

A comprehensive list of Poisonous Plants, Garden and Household substances can be found on the Dogs Trust website (link at the bottom of this page) but here are some of the more common:

Toxic Foods

Apple Seeds

contain cyanide. Various toxic effects

Avocado (the skin & seed)

Diarrhoea, vomiting, laboured breathing. Can be fatal

Onions & Chives

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


Avoid in high quantities

Chocolate (theobromine)

more prevalent is dark chocolate

Macadamia Nuts

affects your do’s muscles and nervous system

Corn on the Cob

The Cob can be fatal if it causes a blockageso should not be given to the dog

Xylitol (common sweetener)

found in chewing gum, some peanut butters and drinks. if your dog digests one of these sweetened foods they can go into hypoglycaemia which is linked to liver failure and blood clotting disorders.

Alcohol & Caffeine

can lead to sickness, diarrhoea and even central nervous system damage.

Cooked Bones

can easily splinter and in large quantities cause constipation or at worst, a perforation of the gut which can be fatal.

Grapes and Raisins

may cause severe liver damage and kidney failure.

Toxic Plants


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


Harmful if eaten in quantity


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


May cause dermatitis


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

Daffodil (bulbs)

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


Toxic if eaten, causing nausea and vomiting


harmful if eaten in quantity


Nausea, vomiting, depression, difficulty breathing and coma. Can be fatal

Rhubarb leaves

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

Yew (berries & foliage)

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. Can be fatal

Household & Garden Substances

  • Ibuprofen
  • Slug Pellets
  • Ant Killers
  • Bonemeal
  • Aspirin
  • White Spirit
  • Antifreeze
  • Bleach

What to do if you think your dog has eaten something poisonous...

Consult your vet immediately. They may ask you to monitor them, ask for further details or ask you to bring them straight in. Poisoning can affect a dog rapidly, so it is important to act quickly. Do not try to make your dog sick and if they have drunk a chemical do not give them water unless you know that it will not cause a chemical reaction making your dog even more unwell.