We bought this Kong Goodie Bone dog toy for our two dogs when they were young and active. One of our dogs is a very active chewer and part pit bull so she has strong jaws. She loved chewing on this toy to get the treats out. Our other dog enjoyed trying to get the treats out...it kept her busy so she wouldn't get into other things as she is part collie/german shepherd. After a few months, our dogs seemed to get bored with it. I think they may have gotten bored with it because they couldn't get anything off of it to chew on and eat. The Kong Goodie bone is on the expensive side of toys, but you won't have to replace it as often, if at all. I was quite impressed at how ours survived both of our dogs growing old. We have now passed this toy on to a family member's dog who is a major chewer in hopes that it will help calm her down and keep her busy when her owner leaves for work. The ends have a little slot (with groovies to help hold the treat in) to put a little tasty treat. We would put a little bit of peanut butter or a cheese ball in the ends so it would stay in there pretty well.