A Good mouser at first will bring dead mice for the kittens to play with. The little ones will growl and stick their tiny teeth into the bodies of the unresisting mice. Later on, mice that are only disabled will be brought and the kittens will have some resistance to overcome. Finally uninjured mice are brought, and if these escape from the kittens, they are caught by the mother and brought back. In this way confidence and real ability develop.FROM THE BOOK