In the game "Red Dead Redemption", what is the name of John Marston's dog?

In the game Red Dead Redemption, the name of John Marston's dog is Rufus. Rufus serves as a loyal companion to John throughout his journey, assisting in various tasks including hunting and tracking. The name Rufus embodies that bond and familiarity between man and his faithful companion, adding depth and emotion to the character of John Marston.