My one year old labrador will not go in to the back yard to pee. He doesn't really like going out there on his own, he will eventually pee but it's a battle to see who gives in first! If he is put outside on his own he just sits and looks at the door. He doesn't pee inside, just holds on to it until he is taken for a walk. He is not the same when we go to someone else's house... straight outside and pees!