S36 E14: Boxer Crab Fights off Pufferfish

S36 E13: Cannibal Wall Lizards in Greece

S36 E12: Go Butterfly Watching with a Pro

S36 E12: How to Save a Butterfly

S36 E12: Filming Beautiful Butterfly Footage

S36 E12: Baby Caterpillar Hatches from Tiny Butterfly Egg

S36 E12: The Remarkable Way that Butterflies Mate

S33 E8: Punk Rock Penguins Take a Stand

S33 E6: Polar Bears Try to Catch Salmon

S33 E6: Killer Whales Attack Pod of Narwhal

S33 E5: Citizen Sloth Patrol to the Rescue

S33 E5: Baby Pygmy Sloth Clings to Mom

S33 E4: Three-toed Sloth: The Slowest Mammal On Earth

S33 E4: Mudskippers Search for a Meal

S32 E19: Golden Frogs Make Waves

S32 E18: Sardine Run in South Africa

S32 E18: Gulf Grunion Beach Spawning

S32 E18: Emperor Penguins Huddle to Keep Warm

S32 E17: How Beavers Build Dams

S32 E17: Beaver Rescue in Denver

S32 E16: Behind-The-Scenes of Snow Monkeys, Part 2: Post-Production