Bullfrog Books

In Octopus or Squid?, beginning readers will learn to spot the differences between these cephalopods. Carefully leveled text relays what the animals look like and how they behave. Each page… More →

How do you stay safe around strangers? Stranger Safety highlights everyday situations readers encounter and how to stay safe at home, in public, and online. Vibrant, full-color photos and… More →

In Koalas, beginning readers will spend a day in the life of a koala. Follow along as koalas climb trees, search for food, and raise joeys. Vibrant, full-color photos and carefully leveled… More →

In Sugar Gliders, beginning readers will spend a day in the life of a sugar glider. Follow along as sugar gliders glide from trees, search for food, and raise joeys. Vibrant, full-color… More →

In Slimy Animals, readers will learn about slimy animals, including snails and slugs, slime eels, and worms. A comprehensive Why Are Some Animals Slimy? back matter feature highlights… More →

In Owls, beginning readers will learn how these birds of prey fly to find food and the physical features that help them hunt. Vibrant, full-color photos and carefully leveled text will engage More →

In Hummingbirds, beginning readers will learn how these tiny birds sip nectar and zip between flowers, build nests, and raise their young. Vibrant, full-color photos and carefully leveled… More →

What reptile fits on your fingertip? What animal might you need a microscope to see? In Smallest Animals, beginning readers are introduced to the tiniest animals across a variety of classes… More →

In Robins, beginning readers will learn how these birds signal the arrival of spring, find food, build nests, and raise their young.. Vibrant, full-color photos and carefully leveled text… More →

In Rocks, beginning readers will learn to identify different kinds of igneous, metamorphic, and sedimentary rocks. Photos and carefully leveled text provide defining details for each kind,… More →

Dung beetles eat poop. Skunks spray smelly liquid. Snails leave slimy trails. In this series, readers will learn about the animal kingdom's grossest animal behaviors, diets, and traits and… More →

In Blue Jays, beginning readers will learn how these birds survive winter, find food, build nests, and raise their young. Vibrant, full-color photos and carefully leveled text will engage… More →