A book about animals

A few pages are slightly worn, but overall in very good condition.
Which was the most common reptile on Earth before the appearance of dinosaurs?
What color is the skin of a polar bear?
How do the stork and hoopoe defend themselves?
Which is the most poisonous fish in the world?
Why do frogs and toads close their eyes when swallowing?

You will learn all this and much more in this book!

Translated from Spanish by Ieva Elsberga.