Dinosaurs were huge—it's common knowledge. So why aren't modern mammals anywhere near that size? In this episode of SciShow, Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size...

Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you!

It arose from rhino ancestors that were a lot smaller, but Paraceratherium would take a different evolutionary path. Believe it or not, it actually became so big that it probably got close to what scientists think might be the actual...

Marine mammals are famously large, but why is that? And is there a polar bear-sized sea otter in our future?

In this lesson, students learn all about mammals. Mammals are an animal classification that share certain features. They breathe air with their lungs, have a backbone, nurse their young, and grow hair. Some mammals walk on 4 legs and...

From the world’s biggest land animal to a creature built more like a tank than a sub, meet seven mammals that you might not think can swim well, but do!

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You might not think much of your tongue, but without it, we may have never conquered dry land and the world as we know it.

You might not think much of your tongue, but without it, we may have never conquered dry land and the world as we know it.

Did you know the giraffe's neck is the size of a tall human?

Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you! If you liked this video, check out more videos about natural...

Mammals are a warm-blooded family capable of living in every environment on Earth, from icy tundras to vast oceans. Characterized by fur or hair, live births, and nurturing their young, mammals range from land giants like elephants—led...

We are all familiar with common examples of mammals such as cats, dogs, and horses. Humans are also mammals. This action-packed series of videos illustrates the common characteristics of mammals while also exploring some of the major...

An introduction to the ‘mammal-like reptiles’ that walked the Earth millions of years before the dinosaurs – and from which all modern-day mammals would eventually evolve. Biology - Animal Kingdom - Learning Points. Early reptiles split...

From dogs to squirrels to elephants, we are familiar with many different mammals. This video explores some of the fascinating features of this amazing group of animals. Concepts and terminology: backbone, fur, warm-blooded, milk, and...

In this De-Natured segment of Nature League, Brit breaks down a recent scientific journal article about the increasing nocturnality of mammals around the globe. Article citation: Gaynor, K.M., Hojnowski, C.E., Carter, N.H., and...

This is a countdown of the 10 heaviest mammals that live on land. You probably expected to see elephants, rhinos, and hippos on this list, but what on earth is a gaur? Find out in this fun and educational video! Like this video if you...

The lives of Asian and African elephants, from what they eat, to where they live, and what's threatening them. Biology - Animal Kingdom - Learning Points. There are two main species of elephant - African and Asian. African elephants are...

CINCINNATI, USA: Covering 100 metres in 6.13 seconds, Sarah the cheetah set a new speed record for all land mammals on the 9th September 2008 in Cincinnati, America. Running on a specially designed 100-metre course at Cincinnati Zoo's...

Science Kids Fastest Animals On Earth - Cheetah, Pronghorn, Springbok, Quarter Horse and More!

The pronghorn antelope, also known as the American antelope, is a remarkable species native to North America known for its incredible...

By the mid-1700s, many Plains nations survived on North America’s largest land mammals: bison. They ate its meat, made the hides into winter coats and blankets, and used the bones and horns for tools. But in the following decades,...

This video provides a fascinating exploration of elephants, the largest land animals on Earth. It delves into their evolutionary history, distinguishing between African and Asian elephants, and highlights their diverse habitats and...

This video discusses the efforts of Portland Hotel and Reserve in reintroducing cheetahs back to South Africa. It highlights the importance of providing ample space and opportunities for the cheetahs to run at their top speeds, as well...

The story of the egg spans millions of years, from the first vertebrates that dared to venture onto land to today’s mammals, including the platypus, and of course birds. Like chickens? We’re here to tell you: The egg came first.

Squeaks and Jessi have been having fun learning all about Australia. Squeaks wants to know more about marsupials, the special group of animals that lives almost nowhere else. So Jessi introduces him to a...