Acorns

Alcohol

Avocado

Beans, uncooked

caffeine

Cassava (tapioca)

Chocolate

Citrus, small amounts if any

Dairy products – their bodies cannot digest it properly

Eggplant

Lettuce (Iceberg) – see more here

Meat

Mushrooms

Onions

Peanuts – danger of aflatoxin

Rhubarb

Fruit seeds and pits – even apple seeds are quite poisonous.

White potatoes