Celebrity Animal Encounters

Rob Corddry ("Ballers") finds himself in deep trouble when his wife brings home an illegal pet; Danny Trejo ("Machete") reveals his heart of gold when he rescues a suicidal dog; Rachael Leigh Cook has an arrogant cat.

Justin Hartley ("This Is Us") loses his good friend's dog; Aimee Teegarden's ("Friday Night Lights") mom proves herself to be a real-life superhero; singer Moby rescues a tiny kitten who eventually changes his life.

Kristen Bell explains the true story behind her famous sloth tale; Kate Micucci struggles to keep at least one of her countless frogs from certain doom; Fabio defends a beautiful supermodel from a dangerous animal attack.

While filming a "Sabrina the Teenage Witch" special in Australia, Melissa Joan Hart's new costar, a bottlenose dolphin, doesn't want to cooperate; as a toddler, Jillian Barbarie goes missing in the woods; Orlando Jones wants his dog back.

Whitney Cummings battles to protect her dogs from a pack of coyotes; Lauren Lapkus gets knocked down a peg in junior high when she shows up smelling of skunk; Perez Hilton finds the perfect match.

Havoc breaks out when a giant Welsh Rabbit crashes a party at David and Christina Arquette's house; Tricia Helfer incurs the wrath of Australia when she saves a forbidden critter; Tiffani Thiessen takes her dogs cross country.