They have to are very rough dogs as I have not witnessed a Puppy destroy just one of those. But to those who have defied the unachievable, I recommend the aptly named Kong Extreme. You can regulate the dimensions of your openings to range the degree of difficulty. This is https://judahvhsbk.thenerdsblog.com/42236622/the-smart-trick-of-dog-toy-set-that-no-one-is-discussing