First Children Encyclopedia

How many mammal families are there?

128

The living world

Mammals include animals such as the

whale, the kangaroo, and you and me!

We all have fur, we are warm blooded,

and we feed new babies with our milk.

Feeding babies

All female mammals produce

milk from their bodies that

they feed to their babies; this

feeding is called suckling.

The milk is rich

and helps

the babies

to grow.

The skeleton

Mammals may

look very different,

but stripped back

to the bone we all

have the basic bony

skeleton. Scientists

call us vertebrates

• animals with
  a backbone.

Mammal babies

Most mammal females give birth

to live babies, rather than laying

eggs. The baby grows inside

the mother’s

body until

it is born.

Within the

mammal group

there are many

different families.

This baby

gorilla is a

member of the

primate family.

Gorilla

skeleton

The world of mammals

Baby

gorilla

Become

an expert

130-131 Marsupials

132-133 Water

mammals