Some of our foods can be dangerous and even poisonous for dogs and cats. Here are a few of them:

Grapes

Raisins

Coffee

Cocoa

Macadamia nuts

Onion

Garlic

Hops

Raw dough

Xylitol

Some of the medicines we take, even over-the-counter ones, are toxic for our pets at much lower doses, such as:

paracetamol, aspirin, ibuprofen