Personalized Dog and Mouse We are The Bestest of Friends Youth Long Sleeve T-Shirt. The easiest way to make a friend is to offer help to someone who needs it. Dog and Mouse We are The Bestest of Friends Youth Long Sleeve T-Shirt - Heather from "Dog and Mouse by Michelle Nelson-Schmidt teaches us that friends help friends, no matter what. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)