I have always heard that rawhide has too much calcium, which can be dangerous, and that some companies use bleach and other chemicals that can make it dangerous. My vet doesn't recommend it, but they are very picky. I give my toller rawhide maybe once or twice a week. She loves it and it only takes her a few minutes to make a 6 inch bone dissapear, the jaws of life couldn't make a bone that she couldn't chew through in minutes. I never leave her unsupervised though and I only buy the natural rawhide, not flavored or bleached. I always feel bad because my cocker is too old for rawhide, it makes her teeth bleed, so I get her the ground up and recompressed type, it looks like it's already been chewed and then shaped like a bone, it is easier for her to eat and break off in little pieces she can swallow. I used to give my dogs pig ears, 59¢ each at petsuppliesplus, but i heard that they carry bacteria and i really don't like the grease and smell. It's kinda gross anyway to have a pig's ear laying around, what's worse is that the store also carries snouts and turkey feet. eww. As for rawhide, so long as your dog is supervised, "let them eat cake", I mean rawhide.