My dog loves chewing on hoofs (hooves?). As for treats, she gets small milkbones biscuits and chews and occassionally meat leftovers... ground meat, tripe, and chicken cartlidge.
That is the first time I've ever heard of rawhide and pigs ears being able to clog their intestines but I will look that up to be on the safe side esp as my dog loves rawhide chews and it keeps him from some mischief! Thanks for the warning