Albus and Dylan hid behind the same Disillusionment Charm. The Newfoundland was crouched on the doorstep of the hut, curled up. He never went inside, and not because Hagrid hadn't tried to get him in. He loved being outside, almost as if he had a sort of sadistic interest in guarding, pointing one by one at the mischievous students who prowled around the hut, growling and drooling on them. For this reason, Hagrid had tied him up with a very sturdy chain made by the Goblins.