Learn about these reptiles and their behaviors.

Look and learn: Visit the tallest of all living mammals.

Look and learn: Visit the largest land animal in the world.

Look and learn: The hippo has the largest mouth of any mammal.

What mammal has an elaborate language and highly-specialized tools?

Look and learn: A hummingbird's wings beat more than 50 times per second.

Look and learn: Swoop in on a bat catching an insect in flight.

Learn more about these fascinating creatures.

Look and learn: Swim with this aquatic mammal.

How and why do animals migrate?