I have recently started ordering from Proper Natural. I have been looking for long lasting, good quality natural chews for my larger dog who can get through most natural chews in minutes. I have found a proper challenge for him with some of the products from Proper Natural! He and my other dog really enjoy the chews. I have found that the large ostrich metatarsus bone, ostrich feet and the buffalo skin roll keep him occupied for hours! Both my dogs have enjoyed all the natural chews they have had from Proper Natural so far and have not had any stomach issues. Delivery is quick too. I would highly recommend.