Sleep
Barbara Herkert
Illustrated by Daniel Long
Albert Whitman & Co.
October 1, 2022
Ages 4-8

Humans require less sleep as they grow older. Grey whales float on the water’s surface to breathe while they sleep. Most mammals and birds exhibit signs of REM sleep, which means they may dream like humans. All living things with a nervous system need sleep, from dogs to insects to sharks to us; sleep specifics just depend on the type of animal and its habitat. Sleep, written by Barbara Herkert and illustrated by Daniel Long, dives deep into the world of slumber with detailed facts about sleep patterns, cycles, and the differences between sleep needs and experiences in humans and animals.

Filled with a lush color scheme and vivid images, the book resonates calm, perfect for this topic of sleep and making it a relaxing bedtime read. Each image is digitally illustrated, in a similar style to mixed media collages, but shaded to bring out depth and textures, which brings each animal to life. Long’s images are vibrant, but simply detailed, keeping them from distracting from the information provided on each page. Sedate pacing prevents the fact-heavy text from overwhelming readers. With a background in biology and fine arts, Barbara Herkert provides facts in a tone filled with admiration for the natural world that complements the extraordinary details she provides. The author also includes a glossary and additional resources as backmatter for those who would like to continue researching the world of sleep. Working through interesting information on humans and animals, the book takes young readers on a mind-opening adventure into the world of sleep and the extraordinary world we live in.