Most Common

Chocolate
(contains theobromine, similar to caffeine, and causes heart arrhythmias and/or death)

Macadamia nuts
(causes severe rear leg weakness and temporary paralysis)

Grapes/Raisins

Pear Seeds Skins & Stems, Plum pits, Peach & Apricot pits, Apple seeds, Persimmons.

Raw Eggs

Raw Fish

Rhubarb Leaves

Potato Leaves & Skins

Tomato Leaves & Skins

Baby Food
(contains onion and garlic)

Alcohol

Almonds

Caffeine
Coffee grounds - often used in gardens as Cocoa Mulch - coffee beans and tea.

Raw Cloves of Garlic
Even though garlic contains thiosulphate like the onion, it appears that it's much less toxic & large amounts would need to be eaten to cause illness.

Mushrooms

Onions
(raw, cooked and dehydrated: destroys red blood cells and can cause anemia)

Tobacco

Yeast Dough

© Warren Eckstein

Click for Toxic Plants and Non-Toxic Plants
A list from the ASPCA containing plants that have been reported as being poisonous to pets and animals - also a list of non-toxic plants ..more