Can Dogs Eat Broccoli?

5. Foods Dogs Can't Eat

Avocado: Avocados contain persin, a fungicidal toxin, which is poisonous to many animals. Dogs are more resistant than most, but it is best to avoid feeding them this fruit.

Grapes and raisins: The substance that causes the toxic reaction in dogs is unknown, but what is known is that ingesting grapes can cause liver and kidney damage in dogs.

Onions: Every part of an onion plant is poisonous to dogs. Onions contain disulfides that destroy red blood cells, and that can cause anemia.

Macadamia nuts: It is not known what the specific toxin is that leads to symptoms of poisoning, but even a small amount can cause vomiting, hyperthermia, and depression.