My dog loves raw hide bones so as what I thought was a special treat I bought him the largest one in the store and it was made by Hartz. This is the first time he’s had one of their bones. He loved it but within hours he was vomiting. I wasn’t sure the bone had caused it and so I took it away and didn’t give it back till several weeks later. And exactly the same thing happened. He also got diarrhea. I’ll never buy a Hartz bone (or Hartz anything) again. I suspect that whatever is in the centre of the bone is causing it because he basically chewed a hole through the rawhide outside and sucked out the centre. Beware all dog owners, do not give your dog these bones!