The Mistress broadcasted a controlling frequency into dogs in New York City in a bid to conquer that plane. Her servant, the Demi-Dog, crossed over and took control of the dogs remotely.  They began gathering garbage for the Demi-Dog. The Ghostbusters initially received 30 calls about dogs behaving strangely. They responded to a call and found a possessed Mastiff in the basement. Unable to exorcise a ghost from it, they bound it in the owner's dryer and took it to Egon Spengler for analysis.
Thousands of the possessed dogs gathered in the Times Square area, summoned by the Demi-Dog. After a brief skirmish with the Ghostbusters, the Demi-Dog emitted a vapor that sent the possessed dogs to attack them. They surrounded and attacked Ecto-1. By mistake, Egon learned Slimer's scream could pacify the possessed Mastiff's aggression. He and Janine Melnitz made a recording and had the team play it over Ecto's P.A. system. They backed away and cowered. Once the Demi-Dog was trapped, the dogs all reverted to normal.
Powers and AbilitiesEdit
Under remote control, the dogs displayed sophisticated intelligence and organization. Demi-Dog could even direct the dogs to employ group tactics.  They can even walk on walls and ceilings.
- "Dog Days"
- ↑ Egon Spengler (1997). Extreme Ghostbusters- Dog Days (1997) (DVD ts. 07:51-07:58). Sony Pictures Home Entertainment. Egon says: "I'm not sure. It could be the dogs aren't locally possessed. But there's a remote source broadcasting a controlling frequency into the dogs."
- ↑ Egon Spengler (1997). Extreme Ghostbusters- Dog Days (1997) (DVD ts. 10:11-10:16). Sony Pictures Home Entertainment. Egon says: "A truck? Group tactics? This is bad. They're growing more intelligent, more organized."
- ↑ Kylie Griffin (1997). Extreme Ghostbusters- Dog Days (1997) (DVD ts. 05:51-05:53). Sony Pictures Home Entertainment. Kylie says: "Getting serious fluctuations, here."
- ↑ Roland Jackson (1997). Extreme Ghostbusters- Dog Days (1997) (DVD ts. 05:54-05:58). Sony Pictures Home Entertainment. Egon says: "Me, too. Steady signal but constantly shifting frequencies."