Hayden Panettiere
Kristen Bell
In addition to her tireless activism and donations to animal rights organizations, Kristen Bell and her husband, Dax Shepard, adopted their dogs from an animal shelter and treat the pets like members of the family.
"I have treated all my dogs like my kids," she tells People. "To me, they're just kids I didn't birth."
Casey Affleck
After winning an Oscar, Casey Affleck used his fame and fortune for a pretty interesting cause: lending his voiceover talents to become the voice of a robotic bear for a new People for the Ethical Treatment of Animals (PETA) campaign.
Oliva Munn
The actress has taken a special interest in exposing the cruelties of animal fur farms. In Olivia Munn's view, fur is just not worth it.
Leonardo DiCaprio
Good ol' Leo established the Leonardo DiCaprio Foundation, which according to its website is "dedicated to the long-term health and well-being of all Earth's inhabitants." And yes, that does include animals. The foundation has given away more than $61 million in grant money and helped 65 organizations in projects such as marine and wildlife conservation.
Betty White
It should come as no surprise that Hollywood's leading Golden Girl also has a soft spot for animals. She reportedly even turned down a movie role because it was going to have a scene involving a puppy being tossed down a laundry chute.
Pamela Anderson
The former "Baywatch" star tells PETA that her journey to animal rights activism has been a long one, starting with being sexually abused as a child and turning that into empathy for all living creatures.
