Grade 1

Baby cats love to involve their owners in a good game of “name that tune.” The melodic fuzzballs have a variety of different meows, squeals, and purrs, each with its own meaning. Sort through More →

For centipedes, leg pairs come in odd numbers. This means they’ll never hit exactly one hundred, as their name implies. Still, these elongated arthropods can pound the pavement with a… More →

Even scavengers can build a model family. Jackals mate for life, and their offspring often stick around to help raise and protect the next litter. Such unity and support is beneficial in the… More →

Before cows make milk, they drink it. Young babies often down two full gallons a day! In this book, take a trip to the countryside to see cute calves quenching their thirst and more in the… More →

How do you measure the success of a wombat? Count how many warrens it has! This busy burrower digs several underground homes, or warrens, complete with tunnels, sleeping chambers, and… More →

When kangaroos gather in large groups, they get loud and physical. Males duke it out in boxing matches, jumping and jabbing with feisty determination to earn the “dominant male” title. Be… More →

When it comes to lemurs, it's a woman's world. Females rule—they eat first, win all family arguments, and fight enemies on the front lines. Learn why you'd want to be “one of the ladies” in a More →

Animals with an appetite for hedgehogs must work hard for their dinner! They need a pain tolerance for sharp spines and the strength to pry tightly curled bodies. Get a feel for why hedgehogs More →

Ostriches are birds that can't fly. They take it in stride, sprinting in short bursts instead. When ostriches can't run from danger, they face it head on. Well, with their heads on the… More →

Compare a hummingbird and an ostrich; the differences are striking! One is tiny and hovers in the air like a helicopter. The other is massive and stays grounded, sprinting rather than flying. More →

The largest animal alive is a mammal. It's the 150-ton blue whale. This whale is not only large but also loud—louder than a jet engine! Turn the pages of this book to learn about the… More →

In an act known as “pronking,” gazelles leap straight into the air with their backs arched before landing on all four feet. Their motive is a mystery, but it may just be their way of telling… More →