The Pet Cemetery II
The Haunted Mansion has plenty of grim grinning ghosts, but not all of them are the human kind. As guests can see from tombs passed by in the queue, there are plenty of animal spirits who call the mansion home. From dogs to frogs to pigs to other things, the supernatural pets seem to follow their masters into the afterlife. I suppose that is what makes them happy haunts. Who wouldn't want to find one's four-limbed best friend in the great beyond?