Sparky

Sparky is the name of Stan Marsh's dog.

Part doberman and part wolf, Stan claims that Sparky is 'the toughest dog on the mountain.' ...This assertion is challenged by other South Park residents when Sparky's homosexual nature is made manifest - first with the mutt Sylvester and then with Clyde's dog Rex. (Sparky also has a brief physical encounter with the mail-ordered poodle Fifi, but his only interest is in Fifi's diamond-studded collar.)

Overhearing Stan repeating an anti-gay tirade first heard from Mr. Garrison, Sparky flees to the shelter of Big Gay Al's Big Gay Animal Sanctuary. He is soon found and returned, and makes very few sporadic appearances in the series after Episode 104: Big Gay Al's Big Gay Boat Ride.