Sylvester was a street dog and he appeared in the Season One episode, "Big Gay Al's Big Gay Boat Ride". Sylvester was the toughest dog in South Park.


In "Big Gay Al's Big Gay Boat Ride", Stan's dog Sparky had sex with him, and made him slink away.

He made his second and last appearance in "Ike's Wee Wee". He was killed by a truck.


Sylvester is a dirty dog with brown fur and yellow teeth. His right eye is purple.

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