Petey's monkey friend Lizzy didn't take too kindly to the intrusion, biting Montgomery.
That's when authorities say Montgomery changed his mind, using sticky buns to lure a 60-pound black bear cub to his waiting car, Upstate South Carolina reported.
He told people he took the cub - Newell (left) - to a Flying J truck stop and charged people $1 to pet it, police said.
The bear cub was found unharmed and returned to the park.
"I think he did it because he just wanted some money,'' said David Meeks, the director of Hollywild Animal Park. "It almost makes me think he wasn't thinking.''
Montgomery was arrested on a charge of third degree burglary and grand larceny.
Two other people are accused of helping him in the theft.