How old is the puppy? What breed? Where did you get him (rescue, friend, or breeder, for example)?

I'm also confused as to what you bought him; a Google search for Pedigree Stage 1 brought up an article on life stages and no products, and the same for Puppy Milk Stage 1. What exactly does the package say?

It's very possible he's just a little scared of his new home and getting used to his surroundings. Can you post any pictures of the cute little guy? :3