10 Human Foods That Are Toxic To Dogs

We want to spoil our pets, but here are some foods that cross the line.

1. Chocolate and coffee

Caffeine (found in coffee, tea, cocoa and cola) and theobromine (found in chocolate) can be toxic to dogs. Caffeine directly stimulates the muscular tissue of the heart and central nervous system.

Symptoms such as vomiting, diarrhea, panting, hyperactivity, muscle tremors, decreased heart rate can occur within six to 12 hours after ingestion and require immediate action before seizures, coma or death occur.  

4. Grapes and raisins

Although it's not known exactly what substance within grapes and raisins are toxic to dogs, it's well known that even a small amount can be fatal, leading to sudden kidney failure. 

Within hours of ingestion a dog may experience vomiting or diarrhea. It may take up to 24 hours for the dog to display signs of lethargy, weakness and loss of appetite. 

7. Avocado

Avocados contain Persin, which can lead to vomiting, diarrhea and constipation in dogs. 

10. Macadamia nuts

Symptoms usually appear within 12 hours of ingestion and last approximately 12 to 48 hours. After ingestion, dogs can present symptoms such as weakness, vomiting, depression and hyperthermia. 

It is still unknown why macadamia nuts are toxic to dogs. 

13. Fruits with seeds and pits

Toxin cyanide can be found in pit and seed type fruits such as apples, cherries, peaches and plums. 

Symptoms of cyanide poisoning are vomiting, breathing problems, apnea tachycardia, cardiac arrhythmias, skin irritation and even coma. 

16. Xylitol, an artificial sweetener

Xylitol is an artificial sweetener that is sometimes used in baked goods, gum toothpaste and other products. It can increase insulin levels leading to hypoglycemia and liver failure. This can happen within days. 


19. Onion, garlic, and chives

Although cats are at most at risk for toxicity from onion, garlic and chives, dogs can experience gastrointestinal irritation and red blood cell damage if consumed in large amounts. Remember for a small dog, it might not take much for it to be considered a large amount.

22. Milk

It's kind of like being lactose intolerant or at least lactose sensitive. Dogs don't have a lot of lactase which is basically what breaks down the lactose in milk making it more digestible. So the result can be an upset stomach and diarrhea in dogs.

25. Salt

As a common household staple for humans, salt is quite poisonous to dogs. It's in many of our foods. 

Salt poisoning leads to symptoms such as vomiting, diarrhea, lethargy, walking drunk, abnormal fluid accumulation within the body, excessive thirst or urination.  It could potentially cause coma and even death. 

28. Yeast dough

Uncooked dough is the worst. It contains yeast that can continue to rise in a dog's stomach. Not only is it painful but it can rupture the intestines. 

Also, the alcohol from the fermenting yeast can be rapidly absorbed into the bloodstream and quickly result in alcohol poisoning.

Keep certain foods away, secure your trash and bring them to the vet if they exhibit symptoms. Mostly though, give them lots of kisses. 

Please share the knowledge with the animal lovers in your life.