The Bulldog is encountered in the Ogre's house when Rosella first enters the house. He will charge at Rosella when she is in the house. The player must throw the bone at the Bulldog and he will catch it and sit in his spot to chew on it. The Bulldog will then forget about you and chew on the bone in peace.
If, for some reason, Rosella forgot the bone or chooses not to throw it, The Bulldog will eat her, causing the word "burp!" appear above him.