On a personal note, I do not give rawhides. I have seen the results of rawhides that have been chewed into a slimy, sticky goo, I`ve seen them vomited up, and I`ve seen the xrays of a dog who swallowed a knot of rawhide and needed it surgically removed. To be honest, I haven`t seen a lot of `good` things about them - other than the fact that dogs like them. But there are lots of things that dogs like that aren`t good for them. When there are better, safer, chews out there, it`s a no for me!!
You might try to find up some bully sticks, which are all natural, untreated bull....parts.
They don`t get as sticky and are far more digestible than rawhide. Or you might get some of the Kong chews and bait them to entice your dog to chew. Nylabones are good, for those dogs that like them. Or heck, a raw meaty bone would do the trick as well!