Days later, Marvin returns to his normal life with no memory of what had happened. Suddenly, he's full of life. He can outrun horses, mean dogs are now scared of him, and he doesn't need his asthma medicine. He thinks it's due to his late-night TV purchase of "Badger Milk", which is guaranteed in the ads to make him stronger.

One day at the park, Marvin meets Rianna (Colleen Haskell) while she's out walking dogs. His animal-like tendencies are slowly taking him over. When a frisbee is thrown in his direction, he can't control himself, and he jumps to catch it in his mouth.

He goes to the airport to talk to his friend, Miles the security guard (Guy Torry) about his problem. While there, Marvin sniffs out a man trying to hide heroin in his rectum. For uncovering a drug smuggler, Marvin is declared a hero and is made a full-fledged police officer.

As days go by, Marvin's animal instincts are becoming stronger. He often wakes up in strange places, and subsequently, hears about animal attacks that occurred in the middle of the night. Because of these attacks, Dr. Wilder believes that Marvin is out of control. The mad scientist confronts him, takes him to his laboratory, and explains about the grafts and transplants that saved and changed Marvin's life, and gave him remarkable animal powers with certain problem side effects.