I can tell you exactly why I love reading children’s books about animals. During my childhood, my home-town library had a summer reading program where you could read any kind of book and THEN there was a Smokey the Bear program where you needed to read books about animals. My sister just tolerated the nature books, but I loved them. Thank you, St. Simons Public Library!
I think one of the best author/illustrators of animal books for children is Steve Jenkins. His primary medium is cut paper, and he has illustrated his own books, he’s written and illustrated with his wife Robin Page, and he’s illustrated books for other authors like April Pulley Sayre. Jenkins’ books typically focus on one aspect of the animal world, such as relationships, habitats, camouflage, etc. You are guaranteed to learn something amazing with each of his books!