Humphrey (voice)

Justin Long

Acting

Kate (voice)

Hayden Panettiere

Acting

Tony (voice)

Dennis Hopper

Acting

Winston (voice)

Danny Glover

Acting

Marcel (voice)

Larry Miller

Acting

Paddy / Mooch (voice)

Eric Price

Acting

Eve (voice)

Vicki Lewis

Acting

Garth (voice)

Chris Carmack

Acting

Shakey (voice)

Kevin Sussman

Acting

Salty (voice)

Brian Donovan

Acting

Lilly (voice)

Christina Ricci

Acting

Sweets (voice)

Elizabeth Tulloch

Acting

Reba (voice)

Christine Lakin

Acting

Debbie (voice)

Mindy Sterling

Acting

Garn (voice)

Fred Tatasciore

Acting

Porcupine (voice)

Nika Futterman

Acting

Candy (voice)

Mela Lee

Acting

Park Ranger (voice)

Steve Vinovich

Acting

Thug (voice) (uncredited)

Aziz Ansari

Acting

Can-do (voice)

Eric Lopez

Acting

Claws / Janice (voice)

Marilyn Tokuda

Acting

Bear Cub (voice) (as Maya Feltheimer)

Maya Kay

Acting