Perro

 is a minor character featured in Red Dead Redemption.

Perro is the otherwise unnamed dog that accompanies Marston on Nightwatch missions in Chuparosa.

During the Nightwatch activity, Perro will also attack the perpetrator, however most of the time he will rely on the player to injure the the perpetrator to the point where he cannot stand. Though this may seem helpful, this does however make it difficult at some times to subdue and hogtie the perpetrator, seeing as most of the time he will be mauled be Perro while on the ground.