Best Friend Forever

In this, the series' first comedic horror story, Jack Pierce accidentally resurrects a zombie (after using a car battery and jumper cables to get some worms) and decides to keep him as a pet, since a zombie is already dead and Jack's mom won't be mad at him for killing yet another pet -- and soon learns that caring for an undead human is just as bad as (and grosser than) caring for an animal, especially when that undead human has an ulterior motive.