Season 5

Video thumbnail: Deep Look How Your Dog's Nose Knows So Much

Deep Look

How Your Dog's Nose Knows So Much

Dogs have a great sense of smell, but what makes their noses so powerful?

How Your Dog's Nose Knows So Much

Video thumbnail: Deep Look Whack! Jab! Crack! It's a Blackback Land Crab Smackdown

Deep Look

Whack! Jab! Crack! It's a Blackback Land Crab Smackdown

These Caribbean crabs will tear each other limb from limb to get the best burrow.

Whack! Jab! Crack! It's a Blackback Land Crab Smackdown

Video thumbnail: Deep Look Want a Whole New Body? Ask This Flatworm How

Deep Look

Want a Whole New Body? Ask This Flatworm How

Planarians are tiny googly-eyed flatworms that can regrow their entire body.

Want a Whole New Body? Ask This Flatworm How

Video thumbnail: Deep Look A Sand Dollar's Breakfast is Totally Metal

Deep Look

A Sand Dollar's Breakfast is Totally Metal

Sand dollars look way different in their lives beneath the waves.

A Sand Dollar's Breakfast is Totally Metal

Video thumbnail: Deep Look How Kittens Go From Clueless to Cute

Deep Look

How Kittens Go From Clueless to Cute

Born deaf and blind, kittens need constant warmth and milk to survive.

How Kittens Go From Clueless to Cute

Video thumbnail: Deep Look This Adorable Sea Slug is a Sneaky Little Thief

Deep Look

This Adorable Sea Slug is a Sneaky Little Thief

Nudibranchs may look cute and defenseless ... but watch out. These sea slugs are thieves.

This Adorable Sea Slug is a Sneaky Little Thief

Video thumbnail: Deep Look Watch This Bee Build Her Bee-jeweled Nest

Deep Look

Watch This Bee Build Her Bee-jeweled Nest

A female blue orchard bee is a multitasking master. Her beautiful nests help food grow.

Watch This Bee Build Her Bee-jeweled Nest

Video thumbnail: Deep Look How Elephants Listen ... With Their Feet

Deep Look

How Elephants Listen ... With Their Feet

African elephants may have huge ears, but they also listen with their feet.

How Elephants Listen ... With Their Feet

Video thumbnail: Deep Look What Do Earwigs Do With Those Pincers Anyway?

Deep Look

What Do Earwigs Do With Those Pincers Anyway?

Earwigs have some imposing pincers on their rear, and they're not afraid to use them.

What Do Earwigs Do With Those Pincers Anyway?

Video thumbnail: Deep Look You'd Never Guess What an Acorn Woodpecker Eats

Deep Look

You'd Never Guess What an Acorn Woodpecker Eats

The lengths they have to go to to stock up for the winter *will* surprise you.

You'd Never Guess What an Acorn Woodpecker Eats

Video thumbnail: Deep Look You've Heard of a Murder of Crows. How About a Crow Funeral?

Deep Look

You've Heard of a Murder of Crows. How About a Crow Funeral?

Crow funerals aren't the solemn events that we hold for our dead. What's really going on?

You've Heard of a Murder of Crows. How About a Crow Funeral?

Video thumbnail: Deep Look Why Do Tumbleweeds Tumble?

Deep Look

Why Do Tumbleweeds Tumble?

To reproduce, vibrant tumbleweeds need to turn into rolling brown skeletons.

Why Do Tumbleweeds Tumble?