congrats on your new baby
everyone will be most helpful on the site with your new addition.
you might want to pick up some nutrical for him if the breeder doesn't talk to you about how fast they can get low sugar etc. you can always call your vet and ask as well or someone might post how much to give to take extra precautions.
The reason I'm bringing this up is because I saw a post about a puppy being sick and hypoglycemia was one of its issues.
I had to worry about this as well with my rescue and she played food standoff the night I brought her home..the next day and sunday morning I bent and got her moist food which she ate if not I'd have gone back and got the nutrical |