Here are some of my favorite animal books:
A cute story about a goldfish in a bowl that gets too crowded, but the unlikely friendships he makes
A classic story to use about finding who you are - and great fiction text for a bat unit!
Amazing book to teach inference! Plus the kiddos get a good giggle out of it!
Anything by National Geographic or Discovery Kids - excellent for expository text and of course amazing photographs!
Mo Williams is a genius! The Elephant and Piggie series is an absolute hit in my classroom! These books are amazing for teaching expression!