If a Collie puppy nips at your heels, it"s exhibiting herding behavior. They housetrain very quickly and will grow to be gentle, friendly, and especially protective of young children. Mans best friend never looked so good. Fun friendly dogs and their puppies are a great addition to any of our various playscapes. Let your imagination run wild, hours of enjoyment anytime, anywhere! Each replica is finely hand painted and accurate down to the last detail.