David Beckham

Soccer Legend; One of Britain's Most Iconic Athletes

Bob Barker

Former Host of "The Price is Right"

John Berger

English art critic, novelist, painter, and poet

Rep. James P. Moran, (D-VA)

Former Senior Member, Committee on Appropriations U.S. House of Representatives

Jason Gray-Stanford

Canadian Actor Best Known for His Role in Monk

Daniel Johns

Australian Singer, Songwriter and Guitarist; Former Front Man of Rock Band, "Silverchair"

Colleen Paige

Pet & Family Lifestyle Expert, Animal Behaviorist, Interior Designer, Writer and Photographer

The Good Behavior Book for Dogs: The Most Annoying Dog Behaviors... Solved!

Hannah Shaw

Cat Protection Professional, Known as "The Kitten Lady"

Sy Montgomery

Naturalist, Adventurer & Author of "The Good Good Pig" & "The Soul of an Octopus"

Bindi Irwin

Wildlife Conservationist & Daughter of Steve Irwin; Season 21 Contestant on "Dancing With the Stars"

Dr. Jan Pol

Veterinarian and star of Nat Geo Wild's "The Incredible Dr. Pol"

Willie Smits

Trained Forester, Microbiologist, Conservationist, Animal Rights Activist, Wilderness Engineer & Social Entrepreneur

David Mizejewski

National Wildlife Federation Naturalist & Media Personality

Garden for Wildlife with David Mizejewski

Dr. Vernard L. Hodges

Veterinarian & Host, Known for National Geographic's "Critter Fixers: Country Vets"

Dr. Katy Nelson

Animal Health Expert, Host & Executive Producer of "The Pet Show with Dr. Katy"

Chrissie Hynde

Singer, Songwriter, and Musician; Best Known as the Lead Singer of the Rock Band "The Pretenders"

Sonia Faruqi

Author of "Project Animal Farm"

Robert William Fischer PhD

Philosophy Professor at Texas State University

David Rosenfelt

Fiction Author & Founder of the Tara Foundation, a Dog Rescue

Michael Archer

Paleontologist Michael Archer is working to bring back his favorite extinct animal: the Tasmanian tiger.