I am not a big fan of bully sticks. They are slimy, smelly and icky, but dogs do LOVE them. lol
I think they are ok for smaller pets such as our yorkies but I know with my bigger dog that she can chew on it till its all soft and slimey and a couple of times she tried to swollowed it and I had to pull it out of her throat because she was choking. Kinda off topic but a warning for those that have larger dogs as well as our little yorkies.