"These have been the biggest hit of all of the toys I've bought for my kittens so far. My only complaint is that they get really aggressive and protective of these little balls, "growling" at each other to protect their toys. But they come running when they hear that jingle. Generally, I've noticed that jingling toys and feathers are my kittens' favorite, and this has both. It's also small enough that they can carry it around. So far, they haven't ripped it to shreds but they're not those kind of kittens."