I give my boy garlic too; it's a natural antibiotic. It's only toxic to vampires, lol.

Whoa there. In fact, there is evidence that garlic is toxic, and a scientfic explanation for it. This is from the Phoenix Animal Control Coalition Pet911 site:

Onions/Garlic: Onions and garlic contain the toxic ingredient thiosulphate. Onions are more of a danger. Pets affected by onion toxicity will develop haemolytic anaemia, where the pet’s red blood cells burst while circulating in its body. Symptoms include Hemolytic Anemia, labored breathing, liver damage, vomiting, diarrhea, discolored urine. The poisoning occurs a few days after the pet has eaten the onion. All forms of onion can be a problem including dehydrated onions, raw onions, cooked onions and table scraps containing cooked onions and/or garlic. Left over pizza, Chinese dishes and commercial baby food containing onion, sometimes fed as a supplement to young pets, can cause illness. While garlic also contains the toxic ingredient thiosulphate, it seems that garlic is less toxic and large amounts would need to be eaten to cause illness. http://www.pacc911.org/Poison_Control.html

If you want to get into deeper reading on the subject, try this study: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11108195&dopt=Abstract

This studies showed changes that can lead to hemolytic anemia, although the dogs did not develop the anemia. However, the study was small and short-term. We can't conclude what would have happened in the long term.

The bottom line, to me, is garlic contains a substance shown to cause changes that can lead to a type of anemia. Although small amounts appear to be safe, the level of "safe" isn't known, especially in the long term. Dogs may not keel over and die from it, but it may have more subtle, long-term effects on their health. We don't know. So it's impossible to weigh the risks against the benefits. And I question whether the benefits of garlic in dogs have also been scientifically studied, or are we just assuming that because it's thought (or shown) to have a benefit in people, it also has a benefit in dogs? That's not a good assumption in the absence of evidence. As us raw feeders are fond of preaching, dogs are physiologically different than humans. What helps us may not help dogs, and may even hurt them. Incidentally, I would appreciate any links pointing me to studies that show benefits in dogs - I'm more than willing to stand corrected!

I know there is scientific evidence and explanations for why garlic can hurt. I don't know there is scientific evidence and explanations for the benefits. Therefore, I choose not to feed it.