Mine LOVE the dental bones by Hartz, I think. They have the nubby things in the middle of them. They also enjoy the durable nylabones and OCCASIONALLY the flavored (peanut butter is their fav) bones but I don't know what brand they are. I do not allow mine to have the other chewies you all have mentioned...I saw Ben get sick from them too many times. Buddy will chew rawhides til he bleeds so they are out too. He just doesn't seem to know when enough is enough. I feel bad b/c Heidi does like them, but if she leaves it and Buddy gets ahold of it I have a hard time getting it away from him. That's about the only time he growls at me. Greenies are OUT after reading a post about someone's dog dying b/c it was blocking his intestines. I am just so fearful of my dogs getting sick or hurt because of something I gave them!