This is a genuinely clever book that does something different with the animal-fact genre. Instead of just listing cool trivia, it gives kids a framework to think about animal lives through accumulated numbers—and then actually shows them all those numbers visually.

The illustrations are engaging, the facts are legitimately interesting (not rehashed from every other nature book), and it sneaks in solid math practice without feeling like homework. School Library Journal pegs it for K-4, and that feels right—young enough to be wowed by the numbers, old enough to grasp the lifetime concept.

It's not going to work as a cozy bedtime read, and it won't convert a kid who hates math into a numbers enthusiast. But for the right audience—curious kids who like both animals and counting—this is a smart, enriching pick that delivers exactly what it promises.