From Bulbapedia, the community-driven Pokémon encyclopedia.
Palm Hills (Japanese: アザラタウン Azara Town) is an anime-exclusive location found in between New Bark Town and Cherrygrove City.
A wealthy area of Johto, it is home to Madame Muchmoney and her Snubbull. When Ash and his friends visited Palm Hills, they met up with the Pokémon and its owner. They learned that Snubbull frequently ran away from its home, mostly because it was sick of being spoiled by Madame Muchmoney. Finally understanding how her Pokémon felt, she started to have a park area built for Snubbull to play, but it found an excuse to leave when Team Rocket showed up. It enjoyed biting down on Meowth's tail, much to his chagrin.
Although Snubbull ran away, Madame Muchmoney tracked it down after it had evolved into Granbull and convinced it to come back home with her.
Pokémon seen in Palm Hills