Kyubimon

Kyubimon (Kyuubi meaning 'nine-tails' in Japanese) is a Phantom Beast-type Digimon. She is a yellow nine-tailed fox with a white mane and flaring paws and tail tips. She was inspired by a japanese beast, the kitsune. Kyubimon is the Digivolved form of Renamon. It is called Kyuubimon in Japanese.

Digimon Tamers
The Digivolution happened when Renamon wanted to protect Rika from Dokugumon.