Personalized Dog and Mouse Best Friends Long Sleeve T-Shirt. Friends are always there for you - rain or shine. Dog and Mouse Best Friends Long Sleeve T-Shirt - Azalea features two scenes of this budding friendship from "Dog and Mouse" by Michelle Nelson-Schmidt. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL