We decided recently that it's the right time to get a new pup and put a deposit down on a puppy a few weeks ago. We decided on a boy as we already have a neutered female and thought a boy would be better than another girl and have to deal with future bitch on bitch aggression. Anyway we went to see our boy today ( he's 5wk3days) and he seems abit of a loner and very reserved. The other puppies were very confident coming tugging on us, play fighting with each other etc as you'd expect but our boy was just so quiet. He did have a play with his sister but he was very submissive on the bottom. The other pups came out in the garden jumping around playing with each over and us but our boy just went off on his own sniffing around and wasn't to bothered with us or the other dogs. I picked him up and he didn't struggle, wasn't shaking and his tail wasn't tucked between his legs which I took as a good sign. Abit later his litter mates were asleep and he seemed more confident and was tugging on their ears etc. It's hard to judge from my time there whether he's scared, shy or just a loner. Does anyone know what potential problems we could have with him? I don't want to bring him into a house (with a 4yr old boy and a very bouncy 2yr old female dog) that will make him more of a loner and possibly end up with fear aggression. I really don't know what to do so any advice is greatly appreciated, thankyou