Hi all, so yesterday I got myself a puppy, a German shepherd x Collie, he's 8 weeks old. he is the most nervous pup I have ever seen, he will hide 24/7 when I'm in the room and not come out for anything, even food! when I'm not in the room he will run about and play by himself and howl looking out and once I open the door he runs to hide again. I have had pups in my lifetime but none like this, has anyone any tips on how I can train him to give him more confidence? Thanks!