I have a 6 month old puppy who is very intelligent. He loves to learn and I can normally teach him something really easily. I've taught him quite a few tricks now but for some reason I can't get him to lie down. He just doesn't seem to get it! I've just taught him to stand up on his back legs and wave, so I don't know why he can do more complicated things but not lie down!
Has anyone got any ideas please? I don't use a clicker.