A seahorse can move its eyes in opposite directions – all the better to scan the water for food and predators.
Hummingbirds’ wings can beat 200 times a second.
Jellyfish, or jellies as scientists call them, are not fish. They have no brain, no heart, and no bones.
The Nile crocodile can hold its breath underwater for up to 2 hours while waiting for prey.
Gecko feet have millions of tiny hairs that stick to surfaces with a special chemical bond and let them climb walls and hang on by just one toe.
A cat’s tail contains nearly 10 percent of all the bones in its body.
An elephant’s skin can be an inch (2.5 cm) thick in places.
In 1963, a cat named Felix became the first feline in space.