How Does Animal Classification for Kids | Mammals Reptiles Amphibians Fish Birds Work?

Animals are grouped into categories based on how they live and what they look like, mammals, reptiles, amphibians, and fish.

Mammals are like your friends who always wear cozy blankets. They have hair or fur, and most of them give birth to babies (except for the ones that lay eggs, like the platypus!). They also warm their own bodies, so they can be active even in cold weather.

Reptiles are more like your friend who wears a coat made of scales. They have scaly skin, and most of them lay eggs. They don’t warm themselves up, they rely on the sun or heat from their surroundings, just like you might sit by the fire to get warm.

Amphibians are like your friend who can live both in water and on land. Think of a frog: it starts life in the water as a tadpole, then grows legs and jumps onto land. They usually have smooth, wet skin.

Fish are like your friend who lives underwater, they swim with their fins and breathe through gills. They always live in water, and most of them lay eggs too.