Dr. John Dolittle

Robert Downey Jr.

Acting

Tommy Stubbins

Harry Collett

Acting

Dr. Blair Müdfly

Michael Sheen

Acting

Lord Thomas Badgley

Jim Broadbent

Acting

King Rassouli

Antonio Banderas

Acting

Chee-Chee (voice)

Rami Malek

Acting

Queen Victoria

Jessie Buckley

Acting

Poly (voice)

Emma Thompson

Acting

Yoshi (voice)

John Cena

Acting

Plimpton (voice)

Kumail Nanjiani

Acting

Kevin (voice)

Craig Robinson

Acting

Barry (voice)

Ralph Fiennes

Acting

Jip (voice)

Tom Holland

Acting

Dab-Dab (voice)

Octavia Spencer

Acting

Betsy (voice)

Selena Gomez

Acting

Tutu (voice)

Marion Cotillard

Acting

Lily Dolittle

Kasia Smutniak

Acting

Lady Rose

Carmel Laniado

Acting

Dragon (voice)

Frances de la Tour

Acting

James the Dragonfly (voice)

Jason Mantzoukas

Acting

Arnall Stubbins

Ralph Ineson

Acting

Bethan Stubbins

Joanna Page

Acting

Arnall Stubbins Jr.

Sonny Ashbourne Serkis

Acting

Sir Gareth

Oliver Chris

Acting

Archbishop

Clive Francis

Acting

Navy Man

Paul Holowaty

Acting

Captain William Derrick

Elliot Barnes-Worrell

Acting

Lieutenant

Mark Umbers

Acting

Don Carpenterino

David Sheinkopf

Acting

Jeff the Prisoner

Sid Sagar

Acting

Postman

Martin Pemberton

Crew

Humphrey the Whale (voice)

Tim Treloar

Acting

Beard Mouse and Leona (voice)

Jim Carretta

Acting

Mini the Sugar Glider (voice)

Nick Fisher

Acting

Clyde

Matt King

Acting

Mouse (voice)

Ranjani Brow

Production

Mouse (voice)

Kelly Stables

Acting

Army Ant (voice)

Scott Menville

Acting

Baby Animal (voice)

Gia Davis

Acting

Baby Animal (voice)

Henry Holcomb

Acting

Baby Animal (voice)

Kyrie McAlpin

Acting

Baby Animal (voice)

Isley Zamora

Acting

Pirate

Stewart Scudamore

Acting

Pirate

Samson Kayo

Acting

Pirate / Animal Performer

John-Luke Roberts

Acting

Prisoner

Joseph Balderrama

Acting

Prisoner

Daniel Hoffmann-Gill

Acting

Animal Performer

Jane Leaney

Acting

On Set Chee-Chee / Animal Performer

Josh Jefferies

Crew

On Set Yoshi / Animal Performer

Shaun McKee

Acting

Animal Performer

Richard Soames

Acting

Rabbit (voice) (uncredited)

Will Arnett

Acting