Grapes – Grapes can actually cause kidney failure in pooches, so if they ingest one keep an eye for abnormal behavior, and if they start vomiting get them to your vet right away.
Raw Eggs – While you probably can’t imagine ever feeding your dog a raw egg, should they ingest one bacteria like Salmonella could be a major danger. Cooked eggs should be fine though.
Avocado – The ingredient persin in an avocado can be toxic to your pooch.
Coffee – The caffeine pick me up, is exactly what makes coffee bad for your pooch, and if consumed in large quantities it could be fatal.
Milk – Dog’s digestive systems are unable to breakdown dairy products and can cause upset stomachs and diarrhea.
Onions – Eating a lot of onions can cause your dog to be anemic since they are bad for your pooch’s red blood cells.
Mushrooms – Some of them contain toxins that can be bad for your dog’s health.
See full list HERE