Answer Rawhide chews are pretty harmless. The problems come when they swallow them whole. They either choke on them, or the rawhide balls up in the stomach and causes gastritis or blockage. We've seen it all.
Moderation is the key.
One every once in a while is OK, but they shouldn't be included as a regular toy or part of the diet. In addition it's usually best to supervise or at least be nearby when your pet is chewing on any toy.