Welcome to Pet Talk! And Congrats on your new sheltie. What is his name?

Was the breeder someone local to you? Or did the dog fly in from somewhere? The more info the people here have, the better they can assist you.

Has he been neutered already? What do you know about how he was at the breeder's. Was he in with a group of dogs or had he been put alone because he was older than the puppies but too young for the adult dogs? Has he already had all his shots, or did you take him in for that? (Shots can sometimes keep the dog low key for a few days.)

Do you have children? Did the breeder have a family for the dog to adjust to children?

I know, it's a lot of questions. But the better the picture you "paint," the better the information which you will receive back.