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20+ Foods Poisonous to Dogs That You Should Never Feed

By Pawstro | 15 Aug, 2025 in Dog Lover, Pet Care

20+ Foods Poisonous to Dogs That You Should Never Feed

Furry friends are very close to our hearts, and we occasionally share pieces of our food with them to show our love. But it is important for us to know what type of food is safe for them and what is harmful, so that we can keep them safe while we feed them all sorts of treats. If you have a dog, then you should be extra careful, because there are many common food items that dogs cannot eat. Let us explore some of the most common foods poisonous to dogs, and you should never feed them.

20+ Foods Poisonous to Dogs

Foods dangerous to dog

Some foods consumed by humans can actually be seriously harmful to dogs. So, before you sneak a piece to your dog, you should be aware whether or not it can take a toll on your furry friend’s health. To make things easy for you, we have included some of the most common things eaten by humans that are poisonous to dogs, which you are likely to accidentally feed them.

1. Avocados: Avocados contain persin, which is toxic to dogs as it can cause vomiting and diarrhea. Avocado pits may also cause intestinal obstruction in your dog. Again, being too high in fat for dogs may also cause pancreatitis.

2. Cherries: Cherries contain cyanide, a potentially deadly chemical if consumed in large amounts. Aside from that, cherries may also get caught in your dog’s airways and potentially choke them.

3. Grapes and raisins: Even if your dog consumes just a few grapes and raisins, it can potentially lead to kidney failure in them. Other foods that contain grapes, like grape juice, can also be harmful for your dog.

4. Tomatoes: While tomatoes that are fully ripened are safe to consume for dogs, the green part of the tomato plant contains solanine, which is a toxic substance for them. To be safe, it is best not to feed your dog any tomatoes at all.

5. Mushrooms: Only a fraction of the entire mushroom species is harmful for dogs, but identifying which ones are can be tricky. It is best for your dog not to consume any mushrooms.

6. Onions: Onions contain anaemia, which can damage dogs’ red blood cells. Hence, you should never feed your dog anything that contains onion, onion powder or onion flakes. The same goes for leek, garlic and chives.

7. Wild berries: Most wild berries are poisonous for dogs.

8. Rhubarb: The soluble oxalate crystals in rhubarb make it toxic to dogs, which may cause kidney failure.

9. Sugar-free candy and gum: These often contain xylitol, which can cause severe illness and even death.

10. Some peanut butters and other nut butters: Some peanut butter and other nut butters contain xylitol, which can cause low blood sugar, seizures, liver failure and even death.

11. Flavoured waters: Also containing xylitol, flavoured butter should be kept away from dogs.

12. Ice cream: Dogs usually cannot digest the lactose in milk products like ice cream. When consumed, it can cause vomiting, diarrhoea, gas, stomach pain, and pancreatitis

13. Chocolate: Containing theobromine and caffeine, chocolate can be poisonous to dogs, potentially causing heart and central nervous system problems.

14. Pudding snacks: Pudding snacks can contain xylitol or chocolate, which are toxic for dogs.

15. Coffee: Dogs are very sensitive to caffeine, and even a small amount can be toxic to them.

16. Sports and energy drinks: These often contain caffeine and xylitol, which can cause seizures, tremors, abnormal heart rhythms, vomiting and diarrhoea.

17. Tea and tea bags: Again, containing caffeine, tea can be poisonous for dogs.

18. Soda: Soda also contains caffeine, which is why it is best to keep it away from your dog.

19. Baked goods: Baked goods containing chocolate, xylitol, and caffeine can be dangerous for your dog.

20. Alcohol: Alcohol depresses the central nervous system in dogs, potentially causing vomiting, diarrhea, depression, drooling, decreased coordination, difficulty breathing, weakness and even coma and death.

21. Macadamia nuts: Macadamia nuts may cause weakness, depression, vomiting, tremors and hyperthermia in dogs.

Conclusion

Here we have discussed more than 20 foods harmful to dogs, which you should never feed them. Although they are safe for humans to consume, even small amounts of some of these foods can be potentially life-threatening for your dog. Hence, be sure to check the ingredients of every food item you give your dog to eat to ensure they do not contain anything that can be potentially harmful or toxic to your furry friend.

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FAQs

Question: Is fish food poisonous to dogs?

Answer: While not toxic in small amounts, fish food may cause vomiting in dogs if they consume it in large amounts.

Question: Is cat food poisonous to dogs

Answer: Dogs should not eat too much cat food, for it can cause digestive problems, obesity and pancreatitis due to an imbalance of nutrients.

Question: What are three toxic foods for dogs?

Answer: Three of the most common toxic foods for dogs are chocolate, onion and grapes.