Looking back, I'm quite sure that destuffing toys and furniture is a learned behavior. When we first got Bitty she loved playing with the stuffed toys we got for her. However our female Jindo and Shiba Inu, Sami and Sable, were already veteran destuffers. It was Sable who started destroying our livingroom sofa, only to be joined joyfully, by Bitty and Sami. When a stuffed squeeky toy came into the house, Sami would appropriate it and chew until the squeek was killed, and then Sable and Bitty would take turns tyearing at it until all the stuffing was gone. Every time we move a peice of furniture we discover another 'dead' critter one of the B's hid away to be brought out later to play. When we find them we always put them in the 'dead critter box'.