Ready to Hatch
![](https://www.timeforkids.com/wp-content/uploads/2021/03/K10305_CMS_1.jpg?w=1024)
Many animals come from eggs. A female animal lays the eggs. After some time, a baby animal breaks out of the shell. Take a look.
Most snakes come from eggs.
![](https://www.timeforkids.com/wp-content/uploads/2021/03/K10305_CMS_2.jpg?w=1024)
Female snakes lay eggs on the ground. Some wrap themselves around the eggs to keep them safe and warm.
Birds come from eggs.
![](https://www.timeforkids.com/wp-content/uploads/2021/03/K10305_CMS_3.jpg?w=1024)
Most birds lay their eggs in a nest. The eggs hatch after about two weeks.
This mammal
mammal
EMMANUELLE BONZAMI—EYEEM/ GETTY IMAGES
a type of animal, most of which give birth to live babies instead of laying eggs and feed milk to their young
(noun)
Both dogs and cats are mammals.
lays eggs.
![](https://www.timeforkids.com/wp-content/uploads/2021/03/K10305_CMS_4.jpg?w=1024)
A female echidna
echidna
MICHAEL BARRETT/EYEEM—GETTY IMAGES
a spiny mammal that hatches from an egg
(noun)
The echidna is an unusual mammal.
lays an egg in a pouch on her body. The echidna is one of just two mammals that lay eggs.
Frogs come from eggs.
![](https://www.timeforkids.com/wp-content/uploads/2021/03/K10305_CMS_5.jpg?w=1024)
Some frogs lay eggs in the water. They lay many at a time. The eggs are like jelly. A frog will grow up to live on land and in water.
How Big?
![](https://www.timeforkids.com/wp-content/uploads/2021/03/K10305_CMS_6.jpg?w=1024)
The ostrich is the largest bird. It lays the biggest eggs of any animal. An ostrich egg can weigh five pounds!