Many people already know that chocolate is poisonous to a dog; however there are a lot of other foods as well.
Nuts
Broccoli
Onions
The seeds of any fruit
Raisins & Grapes
Mushrooms
Coffee or any substance containing high levels of caffeine
Aside from some human food, plants and grasses can be very toxic to a dog. To make sure of your dog’s safety, never allow him to chew on any type of grass. Of course, such items and fluids as
anti-freeze, hair colouring, detergents, anything that is poisonous to a human should be considered harmful to a dog.