DogProxy is a third party proxy program, written by sanctimonious, and made for use with Furcadia. It has found widespread use among users of the Furcadia program, although several of its former unique features have become outdated as the game itself improved.
The most notable feature (which has undergone this shift from third-party to standard issue) has been the ability to swap characters at login. Although DogProxy has other uses which help it retain a sizable share of Furcadia users.
DogProxy is now completely obsolete, as all of its features were built into the Furcadia client in a previous update.