Cheyenne

 is Sunny's dog in 2281.

Interactions with the player character
Sunny and Cheyenne help the fight the Powder Gangers, if the player helps Sunny kill a few geckos. It is also possible for Cheyenne to die while fighting the geckos, but Sunny doesn't hold any resentment when this occurs and will continue to train the Courier.

Appearances
appears in Fallout: New Vegas.