Whistle

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.

Starring Roles

 * TBA

Featuring Roles

 * 1) Happy Tree Friends Roasting On An Open Fire

Appearances

 * TBA

Trivia

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