Mrs. Leslie Williams, A Manual of Toy Dogs: How to breed…
“ No dog can get the mineral salts necessary to healthy blood out of oatmeal, Indian corn meal, or any other meal, nor out of a little iron-hard, dried gristle or some similar substance, such as appears in some so-called "meat" foods. It can only get these substances out of its natural and proper food—meat. Puppies fed on meat from the time their teeth can bite it do not have anæmia, and are consequently free from skin trouble: their blood is rich and pure, and they do not harbour worms. ”
