Personalized Dog Toddler T-Shirt. What a good pup! Dog Toddler T-Shirt - White from Michelle Nelson-Schmidt's children's book "Dog and Mouse" is looking for a friend that's loyal and true. Could it be you? A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.