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Whistle is a minor character from Happy Tree Friends who first appeared in Doggone It.

He is an adorable grey puppy who, hence his name, turns into a savage killer whenever he hears something like a whistle.

He was named after a dog owned by Ken Pontac, a writer of Happy Tree Friends.

EpisodesEdit

Starring RolesEdit

  1. TBA

Featuring RolesEdit

  1. Happy Tree Friends Roasting On An Open Fire

AppearancesEdit

  1. TBA

TriviaEdit

  1. In Simpsons episodes, he takes place of Santa's Little Helper.