Paul Andersen explains how aposematic coloration (or warning coloration) is used for protection in the natural world. He explains how bright colors can be caused by either sexual selection or a warning coloration to predators. He also...

There are estimated to be over 18,000 different bird species with a wide variety of nest shapes and sizes. From teeny, adorable cups to massive compost mounds, the diversity of birds’ nests is definitely impressive. Chapters 1 BALD...

Hank faces off against his Crash Course co-worker Evelyn from the Internets in this test of wits and sticky science knowledge! Who will win and who will lose?

For most humans, farts are a welcome relief, an embarrassing incident, or an opportunity for a gas-based gag. But for many other creatures, farts are no laughing matter. Deep in the bowels of the animal kingdom, farts can serve as tools...

Cicadas have developed an amazing strategy for growth, survival, reproduction, and overcoming predation by...doing nothing. They do nothing for years (except sip at the juice excreted from root structures) before emerging in huge,...

Claws, teeth, stingers... there are a lot of things that can make an animal look downright scary and dangerous. Sometimes, though, looks can be deceiving! Face your fears and learn about eight animals that use their tough looks to hide...

Every year, tiny shrimp do something strange on the banks of a river in Thailand: they get out of the water and walk on the land! Why do they take this risky path?

Sometimes the hairs on the back of your neck raise up when you sense that danger might be near, but what if you were also able to bulk yourself up like a muscular balloon to fend off that danger? This fish, it turns out, can do exactly...

In the late 1800s, paleontologists in Nebraska found huge coils of hardened sand stuck deep in the earth. Local ranchers called them Devil's Corkscrews and scientists called them Daemonelix. It was clear these corkscrews were created by...

Certain cicada species in North America emerge from the ground by the millions every 13 or 17 years. But why those specific intervals? Are cicadas secretly prime-number-loving mathematicians?!

Invasive species destroying ecosystems are a huge problem, but there’s hope that we can help mitigate the damage.

There are creatures who get some super important and recognizable part of their biology from their diets.

This week on the SciShow Talk Show Doug Emlen talks about animal weapons! Jessi from Animal Wonders joins the show to talk about animal defenses and introduce us to the southern three-banded armadillo.

David Gallo shows jaw-dropping footage of amazing sea creatures, including a color-shifting cuttlefish, a perfectly camouflaged octopus, and a Times Square's worth of neon light displays from fish who live in the blackest depths of the...

From mice that battle scorpions to microscopic moss piglets that can survive a solar storm, here are 6 of Earth’s most hardcore beings!

Whether it’s for food, protection, or a little healthy grooming, a lot of animals of different species form some surprising mutualistic relationships in nature. Chapters View all AMERICAN BADGER Credit: Jonathunder 1:00 1 COYOTES &...

Being a parent requires a lot of time and energy, but some animals are extremely devoted to caring for their young, and these five might not be the ones you would expect. Chapters View all BROMELIAD CRABS 1:32 BURYING BEETLES 2:26 DISCUS...

Almost every human has told a lie at some point or another - but did you know that we are not the only species to do this? From dogs to cuttlefish to thornbills, these 7 animals also lie! Chapters MOURNING CUTTLEFISH 0:52 2 DOGS 2:41...

As if koalas could be any more adorable, they also tend to spend a lot of their time hugging trees. But why? Quick Questions has the answer!

Big or small, most creatures end up on something else's dinner menu. But the velvet ant combines a ton of defenses into one very unappetizing package.

Their signature black and white color scheme is part of what makes pandas instantly recognizable - but not many mammals are black and white, so... why do they look like that?

Explore several ecological relationships with The Amoeba Sisters! Ecological relationships discussed include predation, competition, and symbiotic relationships (parasitism, mutualism, and commensalism). Table of Contents: Intro 00:00...

In the insect world, there are few creatures as gentle and innocent as a butterfly. And yet, some butterflies have… an unexpected side to them.

A ravenous swarm stretches as far as the eye can see. It has no leader or strategic plan; its only goals are to eat, breed, and move on. These are desert locusts— infamous for their capacity for destruction. But most of the time desert...