THanks for posting - that's not widely known, and I have had numerous well meaning folks recommend that I give my dog garlic. I only recently found out about this onion family thing - on Martha Stewart of all places - that Mark Marone guy that does the pet segments. He didn't go into any detail on why it should be avoided, though. I don't know why more people don't know about - it's even in a lot of the "healthy" dog treats out there!!