Bull-Dog[1] is a character only appearing in Pac-Man 2: The New Adventures. In the game, he sleeps in his doghouse outside of Lucy's house, in which Pac-Man slinks by not to wake him up.
If Pac-Man wakes him up, Bull-Dog's barking scares him, in which he grabs onto a tree branch out of fear. Afterwards, the tree turns into a slot roulette, and upon winning, apples fall down the tree, causing Bull-Dog to run back into his doghouse out of fear. Upon losing, the branch Pac-Man grabs onto breaks, and Bull-Dog brutally injures him as a result.