Snubbull's habit of biting Meowth's tail
Snubbull first appeared in Snubbull Snobbery, where she was holding on to a Growlithe's tail.
It was revealed that Snubbull was in the possession of a rich woman named Madame Muchmoney, engaged to another Snubbull named Winthrop. She was not happy with her life of luxury, and preferred playing to pampering and Brock's rice balls to gourmet food. Ash and his friends helped Madame Muchmoney to realize this, and so she started making changes just for the sake of Snubbull's happiness.
However, Snubbull still felt something missing from her life, specifically Meowth's tail, which she loved to bite down on. Thus, Snubbull ran away from home to follow Team Rocket. Snubbull reappeared in Grin to Win! where she revealed Meowth when he was in disguise as a Sunflora. Snubbull made some appearances in Tricks of the Trade where she was walking around Palmpona.
Granbull and Madame Muchmoney
In Tunnel Vision, Snubbull took Jigglypuff's marker, forcing Ash and his friends to get it back.
In The Trouble With Snubbull, Snubbull was injured by a wild Mankey when she confused its tail for Meowth's. Madame Muchmoney found her and took her to the Pokémon Center, but Snubbull left to find Meowth once she got the all-clear. After evolving into a Granbull, she bit on the tail of a giant Meowth-shaped mecha, when Team Rocket thought there might be a reward for finding Granbull. When Granbull refused to let go of the mecha's tail, Ash and his friends mistakenly believed Meowth's failed attempts to shock and shake her off the mecha were a trick on Team Rocket's behalf.
Meowth accidentally launched the tail missile with Granbull still holding on, but Madame Muchmoney caught her. When Granbull finally let go, Madame Muchmoney and Granbull fought Team Rocket together. After dodging the mecha's rocket glove attacks, Granbull broke the TV monitor with Dynamic Punch, leaving Meowth unable to see which way he was going. After Pikachu blasted off Team Rocket, Madame Muchmoney and Granbull raced home on foot. This also resulted in Granbull no longer following Team Rocket.
Granbull, as a Snubbull, also appeared in OK! and Pokémon Johto, the first opening themes for the Japanese and English dubs of the Johto saga respectively.