Alan Cumming

Emmy-Winning Actor Who Stars in "The Good Wife"

Anna Paquin

Actress Best Known for "True Blood" and for the X-Men Franchise

Bella Thorne

Model, Actress & Author

Bindi Irwin

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

Carrie Ann Inaba

"Dancing with the Stars" Judge, Founder of Carrie Ann Inaba Animal Project

Cesar Millan

Host of The Dog Whisperer; Author of Cesar's Way

Danny Trejo

Actor, Author, Activist & Restaurateur; Recovery & Intervention Counselor for Troubled Youth

Elayne Boosler

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

Ian Somerhalder

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

Jason Biggs

Actor Known For His Roles in the "American Pie" Series and on "Orange Is The New Black" Among Others

Kristin Cavallari

TV Personality, Fashion Designer, Bestselling Author & Founder of the Lifestyle Brand Uncommon James

True Comfort: More Than 100 Cozy Recipes Free of Gluten and Refined Sugar: A Gluten Fre...

Leona Lewis

Singer, Songwriter & Animal Welfare Activist; Best Known for "Bleeding Love"

Lisa Vanderpump

Entrepreneur, TV Personality, Author & Philanthropist

Lisa Vanderpump Tells Us About Her First Times

Martin Sheen

Award-Winning Actor Known for "The West Wing" & "Grace and Frankie;" Social Activist & Humanitarian

Mena Suvari

Actress Known for "American Beauty" & Author of "The Great Peace: A Memoir"

Mike White

TV and Film Writer, Director, Actor & Producer

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Rachel Zoe

Celebrity Stylist, Fashion Designer, Author, Talk Show Host of "Fashionably Late With Rachel Zoe"

Roselyn Sanchez

Puerto Rican Singer-Songwriter, Model, Actress, Producer and Writer; Carmen Luna in "Devious Maids"

Sophia Bush

Actress, Humanitarian & Author