Dawn's Quilava is the fifth Pokemon obtained by Dawn. She received it as an egg.
Quilava made its first appearance as an egg where Dawn was determined to win it. Team Rocket attempted to steal the egg, but it was rescued by Dawn and it hatched into a Cyndaquil. In its second appearance, Team Rocket tried to steal it and Ash's Pikachu, but they were rescued by their trainers. It is a target to Team Rocket who try to steal it and the gang's other Pokemon.
Quilava is a caring and friendly Pokemon. It cares for its trainer very much.