Personalized Dog and Mouse Building Snowman Youth Long Sleeve T-Shirt. Dog and Mouse work together as best friends to create something wonderful. Dog and Mouse Building Snowman Youth Long Sleeve T-Shirt - White, for helpful friends who love "Dog and Mouse" by Michelle Nelson-Schmidt. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)