What is the difference between a mammal, a reptile, an amphibian, a bird, and a fish?
Animal Party Clues
What is the difference between a mammal, a reptile, an amphibian, a bird, and a fish?
Imagine throwing a party and inviting every animal on Earth. A dog trots in, a frog hops past, a snake slides under the table, a parrot lands on the punch bowl, and a goldfish arrives in a borrowed jar. Five very different guests — but how do we sort them into groups? Scientists do it with a few clever clues, and once you know the clues, you can sort almost any animal yourself.
First, the warm club versus the cool club. Mammals and birds run their own central heating — their bodies stay warm whether it's snowing or sweltering. Reptiles, amphibians, and fish don't. They borrow heat from the world around them, which is why you'll find a lizard sunbathing on a warm rock to wake itself up.
