Grapes and raisins have proved to be very toxic for dogs no matter the dog’s breed, sex, or age. In fact, grapes are so toxic that they can lead to acute sudden kidney failure.
Currants carry the same level of severe toxicity that grapes and raisins do.
3. Tomato Plants
While the ripened fruit of the tomato plant (the red part humans normally eat) is generally considered safe for dogs, the green parts of the plant contain a toxic substance called solanine.
The pit, skin and leaves of avocados contain Persin, a toxin that often causes vomiting and diarrhea in dogs.
Wild mushrooms can be toxic for dogs. While only 60 to 100 of the 50,000 mushroom species worldwide are known to be toxic, the ones that are can really hurt your dog or even lead to death.
6. Onions, Garlic
Garlic, onions, leeks, and chives are part of a family of plants called Allium that is poisonous to most pets, especially cats. Eating onions can cause your dog’s red blood cells to rupture, and can also cause vomiting, diarrhea, stomach pain, and nausea.
With the exception of the fleshy part around the seed, cherry plants contain cyanide and are toxic to dogs. Cyanide disrupts cellular oxygen transport, which means that your dog’s blood cells can’t get enough oxygen.
8. Apple Seeds
Apple seeds contain amygdlin, a form of cyanide, which is very poisonous to every living thing. Cyanide prevents the blood from carrying oxygen throughout the body.