[JettaAndOscar]

There are a lot of things you shouldn't feed your dogs:
1. raisins
2. grapes
3. chocolate
4. onion
5. garlic
6. the green parts of tomato plants are toxic
7. macadamia nuts
8. mushrooms
9. caffeine
there are others like yeast dough, etc.

 

[JettaAndOscar]

Garlic is not as toxic as onions, but in large enough doses (quite large I believe) it can damage red blood cells, leading to anemia.

 

[JettaAndOscar]

Small doses shouldn't hurt, but large doses their red blood cells can burst =(