Even if your little sprouts seem to set up a grudge match over just about everything: choosing the Friday night movie, toppled LEGO towers, and endless hours of she-touched-me-again, in the end, a brother or sister is a built-in best friend. (Who better to help drive Mom crazy or snicker with at Dad’s creative cooking?). Flip through the album to see our picks for best picture and chapter books celebrating the ultimate family bond.

Maple & Willow Together

Age: 4-8

First there was Maple, a delightful picture book about a common theme—the arrival of a new baby. Here, we’re treated to a rare follow-up: baby sister Willow has grown up a bit and we get to witness the evolution of their friendship. These books (the third is Maple and Willow Apart) have a pleasing nature theme, as evidenced by their arboreal names.

Available at powells.com, $16.99.

What’s your favorite book about siblings? Share with us in a comment below!

— Emma Bland Smith