Foods to Avoid

Information found on the ASPCA website

Avocados 
Onions
Garlic
Chocolate in any form
Coffee (grounds, beans, chocolate-covered espresso beans)
Tea
Yeast dough
Salt
Grapes and Raisins
Tomato leaves and stems (green parts)
Potato leaves and stems (green parts)
Rhubarb leaves 
Moldy or spoiled foods
Alcoholic beverages

Be careful with milk and other milk-based products as they can cause diarrhea or other digestive upset.