A new work by the author of Japan’s 4.2 million-volume series.

Gorilla, elephant, giraffe, orangutan…

Well-known animals. But can you explain the difference between male and female

? Now, almost all living things on the earth have “differences (sex)” between males and females. Why is this?

The reason is simple. “Because it is conducive to survival.”

For example, a giraffe has a taller male and a smaller female.

Is it simply because “males grow bigger for fighting?”

Actually it is not, it is to stagger the height of eating trees with male and female.

The characteristic long neck of the giraffe, the leaves that can be eaten are limited.

If you eat leaves of the same height with males and females, you will be troubled by food immediately.

This book, like this, not only reveals the difference between males and females, but also digs into topics such as “Why are there such differences?” to understand the world in which animals live.

This book uses the angle of “male and female” to introduce the incredible evolution of these creatures. The book covers many types of animals from mammals, reptiles, and birds.

With both pictures and texts, both children and adults will be able to read this book in an interesting manner.