All About Animals

6 Different Animal Groups

birds fish insects mammals amphibians reptiles

Birds

All birds have feathers, but not all birds can fly.

All birds have beaks and wings. Birds live in a nest. Birds are warm-blooded. All birds hatch from eggs. All birds breathe with lungs.

Fish

All fish breathe with gills. All must must live in water. Fish are cold-blooded animals. Some fish lay eggs while other fish

have live babies.

Insects

Insects must have six legs. Insects have three body parts called the

head, thorax, and abdomen. Insects must have wings and antennae. A hard shell called an exoskeleton

covers all insects.

Mammals

Mammals give birth to live babies. The mammals babies’ drink milk from

their mothers. Mammals use lungs to breathe. Hair covers mammals’ bodies. All mammals are warm-blooded.

Amphibians

Amphibians are animals that are born in water and grow to live on land.

They have smooth, wet skin. Amphibians are cold-blooded. Amphibians lay eggs in water. Amphibians breathe with gills when small,

and then with lungs when they are adults.

Reptiles

Reptiles have dry, scaly skin. Reptiles are cold-blooded. Reptiles breathe air through lungs. Most reptiles lay eggs. Reptiles have short legs or no legs at

all.