Horses, Donkeys, and Mules in the Marines (America's Animal Soldiers)

Nuclear Accident: Chernobyl Power Plant, Ukraine (Eco-disasters)

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Smelly Stink Bugs (No Backbone! The World of Invertebrates)

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Rottweiler: Super Courageous (Big Dogs Rule)

Jumping Spiders (No Backbone! The World of Invertebrates)

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Prison Puppies (Dog Heroes)

Spectacular Skyscrapers (So Big Compared to What?)

Reticulated Python: The World's Longest Snake (More Supersized!)

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Baghdad Pups (Dog Heroes)

California Condors: Saved by Captive Breeding (America's Animal Comebacks)

Toxic Water: Minamata, Japan (Eco-Disasters)

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Skydiving Dogs (Dog Heroes)

Southern Elephant Seal: The Biggest Seal in the World (More Supersized!)

Sea Lions in the Navy (America's Animal Soldiers)

Doctors to the Rescue (The Work of Heroes: First Responders in Action)

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Navy: Civilian to Sailor (Becoming a Soldier)

Shelter Dogs (Dog Heroes)

Moray Eel: Dangerous Teeth (Afraid of the Water)

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Marine Corps: Civilian to Marine (Becoming a Soldier)

Sheriffs and Deputies (Police: Search & Rescue!)

Dogs (Smart Animals)

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State Troopers (Police: Search & Rescue!)

Murderous Mosquitoes (Bugged Out! The World's Most Dangerous Bugs)

Bomb-Sniffing Dogs (Dog Heroes)