In this episode we ask: how do dogs detect underwater targets? What makes ostriches nature's best marathon runners? How do sloths spend so much time upside down without passing out? And can a pelican bill really hold more than his belly can?

In this episode we ask: how do anteaters slurp up so many ants? Why do beavers build dams? How do canines stay cool? Why do humpback whales sing? And why do dung beetles do what they do?

In this episode we ask: how do woodpeckers avoid concussion? Why are giraffes' tongues black? How can ants survive a flood? How do octopuses squeeze into tiny spaces?

In this episode we ask: how do fish take a bath? How do polar bears stay warm? Is your pet pup smarter than a wolf? How do spiders float in the air for hundreds of miles?

In this episode we ask: why do dogs tilt their heads? How do massive humpback whales propel themselves into the air? Do hippos sweat blood? Why do animals swarm? And, why do spiders jump out of their skin?

In this episode we ask: how do thousands of bats take to the air without colliding? Do mice really love cheese? How do cats jump so high? And, why are manatees so gassy?

In this episode we ask: what do dog barks actually mean? Why do sloths turn green? Who is the best jumper in the animal kingdom? How do sea turtles find their way back home? And, how do diving beetles spend so long underwater?

In this episode we ask: why do dogs bury bones? Can elephants detect bombs? Why do birds sing in the morning? How are sea lions able to catch fish in the deep, dark waters? And, what makes seahorses virtually indestructible?

In this episode we ask: how do furry koalas keep cool in the Australian sun? How do elephants communicate when they're miles apart? Are vultures immune to disease? What is the secret to a frog's amazing tongue? And how do spiders live so long?

In this episode we ask: how do kangaroo moms churn out so many joeys? Why don't spiders get stuck in their own webs? How do foxes find water in the desert? And what's the secret to the chameleon's perfect strike rate?

A look at how dogs know when someone is sick; why octopuses have blue blood; which animal makes the most amazing nest; exploring whether elephants really never forget; how cicadas make so much noise.

A look at how hamsters stuff so much into their cheeks; why camels have humps; exploring whether alligators have a secret supersense; why pigeon wings are so noisy.

A look at how sheep dogs wrangle sheep; why moths are attracted to flames; why turtles cry; why sea otters bond with stones; why roosters crow before dawn.

A look at how dogs tell the time; the power behind a mantis shrimp's punch; the secret behind the kangaroo's hop; why honeybees die after they sting; why vultures fly in circles.

In this episode, we ask: why are cows always chewing? Do rhinos have a sensitive side? What's the loudest animal on earth? Why do star-nosed moles have such weird noses? Why do rattlesnakes release their prey?

In this episode, we ask: how do cats always land on their feet? How do butterflies create their beautiful wings? How do tiny hummingbirds fly in the rain? Does a subterranean mammal hold the secret to longevity?