Hot, Hotter, Hottest: Animals That Adapt to Great Heat

Deep, Deeper, Deepest: Animals That Go to Great Depths

Cold, Colder, Coldest: Animals That Adapt to Cold Weather

Fast, Faster, Fastest: Animals That Move at Great Speeds

High, Higher, Highest: Animals That Go to Great Heights

Do Dogs Make Dessert?: A Book About How Animals Help Humans

Do Penguins Have Puppies?: A Book About Animal Babies

Do Whales Have Wings?: A Book About Animal Bodies

Do Frogs Have Fur?: A Book About Animal Coats and Coverings

Do Parrots Have Pillows?: A Book About Where Animals Sleep

Do Goldfish Gallop?: A Book About Animal Movement

Do Bees Make Butter?: A Book About Things Animals Make

Do Bears Buzz?: A Book About Animal Sounds

Do Salamanders Spit?: A Book About How Animals Protect Themselves

Do Ducks Live in the Desert?: A Book About Where Animals Live

Do Squirrels Swarm?: A Book About Animal Groups

Do Cows Eat Cake?: A Book About What Animals Eat

Roll, Slope, and Slide: A Book About Ramps

Pull, Lift, and Lower: A Book About Pulleys

Scoop, Seesaw, and Raise: A Book About Levers