It is not known to evolve into or from any other Pokémon.
Chatot is an avian Pokémon similar to a parakeet. Its head is black and resembles an eighth note, while its black tail resembles a metronome. It plumage is brightly colored with blue wings, a yellow chest and feet, a green stomach, and a pink, hooked beak and eyelids. Additionally, there is a ruff of white feathers around its neck. This Pokémon's tongue is similar to a human's, allowing it to imitate human speech. Chatot is also able to mimic the cries of other Pokémon, and uses this ability as a defense mechanism. Chatot uses the sounds it has learned and arranges them into its own melody, and flicks its tail to keep rhythm. Chatot is the only known Pokémon that learns Chatter.
A Chatot appeared in Pikachu's Island Adventure, where it, along with a Hariyama and Exploud, assisted Meowth and his cronies in claiming an island and kicking out its current residents. As a result, Pikachu and his friends agreed to help the original resident Pokémon reclaim the island.
A Chatot appeared in Bright Lights, Big Changes!, where it was seen on television during an episode of Alolan Detective Laki. It had been selected by George Charino to join Laki's team as a new partner for the show, as part of a change of format.
Pearl owns a Chatot nicknamed Chatler who often smacks Diamond's Munchlax on the head. He, like a parrot, is able to perfectly mimic human speech, which he makes a habit of (although he cannot understand what he is repeating). He first appeared in Stagestruck Starly.
Prior to Generation VI, Chatot is the only Pokémon whose cry is not altered when it faints or is sent out with a status condition.
Despite having significantly higher Special Attack and Speed stats, Chatot awards EV points in Attack.
In Generation IV, a person in Eterna City will trade a Chatot in return for a Buizel, and the Chatot's nickname is Charap, a mixture of its English and Japanese names. If this Pokémon is traded to X or Y, the game will recognize the Chatot to be Japanese.
Perap may be a combination of parrot and rap. It may also derive from ぺらぺら perapera, which can mean "fluent in languages" but also "blah blah blah", referring to how incessantly some parrots will talk and chatter.
In other languages
Possibly from parrot and rap. May also derive from ぺらぺら perapera, which can mean "fluent in languages" but also "blah blah blah", referring to how incessantly some parrots will talk and chatter.