Jackson Galaxy

Host, "My Cat from Hell" & Author, "Cat Daddy: What the World's Most Incorrigible Cat Taught Me About Life, Love, and Coming Clean"

Robert Irwin

Wildlife & Nature Conservationist, Photographer, Author, and TV Personality; Son of Steve Irwin, Owner of Australia Zoo

Robert Irwin Reveals His Most Feared Animal! | The Cheap Seats

Victoria Stilwell

Internationally Renowned Dog Trainer & Host of "It's Me or the Dog"

Ian Somerhalder

Actor Known for "The Vampire Diaries"; Animal & Environmental Advocate; Founder of The Ian Somerhalder Foundation

Simon Lovell

English Comedy Magician, Card Shark Actor and Con Man

Katie Cleary

Actress and Model; Founder of Peace 4 Animals and World Animal News

Matt Damon

Actor, Screenwriter & Producer; Co-Founder of Water.org; Expert Advocate on Global Water & Sanitation Crisis

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Rachael Ray

Chef, Cookbook Author & Television Host Known for the "Rachael Ray Show"

Elayne Boosler

Comedian & Advocate for Animal Rescue; Founder of Tails of Joy

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Dr. Katy Nelson

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

David Mizejewski

National Wildlife Federation Naturalist & Media Personality

Elaine Hendrix

Actress & Animal Activist; Known for her Role in the Remake of "The Parent Trap"

Lisa Vanderpump

Entrepreneur, TV Personality, Author & Philanthropist

Lisa Vanderpump Tells Us About Her First Times

Daniel Pauly

Daniel Pauly is the principal investigator at the Sea Around Us Project, which studies the impact of the world's fisheries on marine ecosystems. The software he's helped develop is used around the world to model and track the ocean.

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Lo Bosworth

Entrepreneur & Lifestyle Personality, Author, and Alum of MTV’s Reality Show, "The Hills"

Tim Gunn

Fashion Icon, Former Co-Host & Mentor of "Project Runway"

Robert Ballard

Renowned Ocean Explorer & Scientist

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Mario Lopez

Actor & Entertainment Journalist

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Tom Colicchio

Chef & Owner of Crafted Hospitality

Aldo Kane

World Record Setting Adventurer; Fellow at the Royal Geographic Society, Author & TV Presenter

Jonathan Van Ness

Hair & Beauty Expert, Author, Television Personality; Known for Netflix's "Queer Eye"

Karamo

Television Host & Culture Expert on Netflix's "Queer Eye"

Megan Alexander

TV Host, Author & Brand Ambassador

Faith in the Spotlight: Thriving in Your Career While Staying True to Your Beliefs

Tia Torres

Pitbull Advocate & Rescuer Known for Animal Planet's "Pit Bulls & Parolees"

Bindi Irwin

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