Dr. John Dolittle
Lisa Dolittle
Maya Dolittle
Charisse Dolittle
Archie (voice)
Ava (voice)
Eldon
Eugene Wilson
Eric
Secretary
Eldon's Wife
Riley / Alligator
Judge B. Duff
Joe Potter
Logger / Nature Show Narrator
Animal Control Officer / Dog / Animal Groupie #3 / Forest Animal (voice)
Woman
Farmer
Farm Worker
Yuppie Man
Newscaster
Bear Announcer
Shamu Trainer
The Crocodile Hunter
Klondike Dave Delivery Man
Waitress
Chihuahua Lady
Guy Throwing Frisbee
Pepito (voice)
Joey the Raccoon (Voice)
Possum (voice)
Lennie the Weasel (voice)
Squirrel (voice)
Fish (voice)
Dog / Animal Groupie #2 (voice)
School Fish #2 (voice)
Horse Race Announcer (voice)
Seeing Eye Dog / Wassup Fish / Mouse (voice)
Giraffe (voice)
Sonny (voice)
Bandit / Forest Animal / Animal Groupie #1 (voice)
Male Tortoise (voice)
Bee (voice)
Zoo Bear #1 (voice)
Bird (voice)
Deer (voice)
Girl Bear Cub
Boy Bear Cub (voice)
Animal Groupie #4 / Forest Animal / Dog (voice)
Drunk Monkey (voice)
Rat #2 (voice)
God Beaver (voice)
School Fish #1 (voice)
Female Tortoise (voice)
Zoo Bear #2 (voice)
Frisbee Thrower in Park (uncredited)
Governor of California (uncredited)
Lucky (voice)
Drunk Monkey (uncredited)
Boy Bear Cub
White Wolf (voice) (archive sound) (uncredited)
Rat #2 (voice, uncredited)