Non fiction books

I am learning to describe the features of a non-fiction text.

The book ‘The Biggest Land Animal” is a non-fiction text. I know it is non-fiction because:

Photos What type of pictures are in this book?	Photos
Index What does the index tell us?	It tells you where to find things in the book.
Glossary What does the glossary tell us?	It tells you what the words say.
Why do we read non-fiction books?	So we can know about animals and other stuff.
What have you learnt from reading this book?	This book is teaching us about elephants.

It was a tiny bit hard to talk about non fiction books because I couldn't think about much. I could have read the book again to help me a bit more.