Animals & Insects

We think of whales as creatures of the sea, but scientists now believe that 40 million to 50 million years ago, whales had four legs and lived at least part of their lives on land.

Can we eat meat ethically? Journalist Camas Davis tells us how we can.

Feline behavior specialist Sarah Ellis explains how you can train your kitty to come on command, take medicine and stop waking you up in the middle of the night. Originally broadcast Sept. 12, 2016.

You'll root for 13-year-old Mija at every step of this new Netflix film. And Okja, the huge, genetically modified pig, is among the most touching and realistic computer-generated characters ever made.

Conservation photographer Paul Nicklen has been documenting the wildlife in the arctic regions of the world for decades, often getting dangerously up close with the animals he encounters in the sea and on land.

National Geographic contributing photographer Joel Sartore is 11 years into a 25-year endeavor to document every captive animal species in the world using studio lighting and black-and-white backgrounds. So far, he's photographed 6,500 different species, which leaves approximately 6,000 to go.

Dogs can sniff out people, drugs, bombs, cancer and much more. In her book Being A Dog, Alexandra Horowitz explores the mysteries and mechanics of canine noses. Originally broadcast Oct. 4, 2016.

Animal stage trainer Bill Berloni has 30 years' worth of experience training dogs, pigs, rats, cats and lambs for Broadway productions and Hollywood films.

Where will you find more violence than in an NC-17 movie? More sex than on VH1's reality shows? In the downright wild world of the dung-beetle. Biologist Douglas Emlen explains.

Robert Sullivan's Rats: Observations on the History & Habitat of the City's Most Unwanted Inhabitants chronicles the year he spent studying alley rats in New York City. He says you'd be surprised at what picky eaters they can be.