Do you want a happy, satisfied dog? Then try Pet ‘n Shape's Bones and Chews. I have three Great Pyrenees who are working farm dogs (each dog around 100 pounds). They are guardians to our flock of sheep. One of the dogs has a stronger chew drive than the other two. I only had two of the Pet ‘n Shape bones and a cowhide bone from another company. One of the dogs doesn't care that much about chews, so she received the other cowhide bone. The two dogs that received the Pet ‘n Shape bones were very excited once they caught a whiff of the bones. They both sat and kept their eyes glued on the bones until I gave the bones to them. They each trotted off in a different direction and immediately began gnawing on the bone. I went about my chores and within 20 minutes, I saw Tilly (the dog that doesn't care that much about chews) with one of the Pet ‘n Shape bones. She had stolen from one of the other dogs! I haven't had the bones for more than a couple of weeks so I'm not sure how long they will last. But I must say that I'm surprised they have lasted this long. Most of the time, the bones are pretty much done after one week. I'm very glad that the bones are sourced and made in the United States. I try to make it a point to only buy treats/chews made and sourced in America. Not only do the dogs get to enjoy a nice treat, I feel good that these bones are completely digestible and assist in cleaning teeth and gums. I will be buying more.