How old and big is he?? I for one like to see the puppy eat kibble. If they are a good eater then i feel good about the pup. Winnie was a good eater at the breeders but when i brought her home she needed to be hand feed for a few weeks. New environment probably.. But I'm lucky enough my wife is an at home dog sitter.... So theres always someone there for my girls. And never left home alone longer then 2-3 hrs....Some exceptions like an evening party but not everyday and I have security camera on them