It evolves from Eevee when exposed to a Fire Stone.
Out of the seven known Eeveelutions, Flareon bears the closest resemblance to Eevee (Its shiny sprite looks even more like Eevee, just larger and with much more fur). Flareon's body is covered in red fur. Flareon has a large, bushy tail, fluffy collar and a tuft of fur on its head; all of which are yellow. The paw pads on its feet are also yellow. Flareon has a very high internal body temperature.