I will never again give mine rawhide. It isn't digestible and can cause an obstruction. Here's a good article about them...
http://www.daneangelnetwork.org/rawhide.htm
I gave rawhide once to our smaller dog and she got violently ill. We actually thought we were going to loose her.
What I do give is... bully sticks (love them), better than ears treats (the ingredients aren't great but at least they can digest them), dried string ray tails called "fish sticks", durable nylabones, natural rope chews. I'm sure I can think of more. Bully sticks are by far my favorite. We also give raw meaty bones which are great to clean teeth.