Personalized Dog and Mouse We are The Bestest of Friends Toddler 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 Toddler Long Sleeve Tee - Light Blue from "Dog and Mouse by Michelle Nelson-Schmidt teaches us that friends help friends, no matter what. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.