"This highly entertaining disquisition reminds readers, things that seem frightening at first can become quite wonderful once you get to know them."

– Publisher's Weekly, April 8, 2019

"Balances gracefully on the edge between comically informative and spooky; audiences wary of scares may find the straightforward cheer reassuring, while those who embrace the skeletal dark side will still have plenty of bony visages to admire. . . . This has obvious potential for Halloween/Día de los Muertos use, but it also has entertaining year-round possibilities for kids to get into their own headspace—literally."

– BCCB

"With snappy writing Thornburgh describes a skull’s importance (it’s “a car seat for your brain”) and its functions (it gives a face its shape; it holds teeth in place; and more). . . . Campbell packs plenty of humor into his muted watercolor illustrations (the grim reaper sips from a juice box) in this jaunty paean to human skulls."

– The Horn Book

"A page of 'Cool Skull Facts!' opposite a final, fairly anatomically correct image gives this good odds of becoming a STEM and storytime favorite. Readers who have never thought of it before will agree: 'Take care of your skull, because you only get one.'"

– Kirkus Reviews

"Guaranteed to get kids giggling and proclaiming, 'I love my skull!'"

– Booklist

"Skulls may often be associated with death and mortality, but this life-affirming book is breezy and ebullient. You can say it again: Skulls were never more fun."

– BookPage

"The carefree tone and tidbits of humor, such as the girl’s love of grilled cheese sandwiches, make this an amusing introduction for young students of the human body."

– School Library Journal

"Campbell's sweetly absurd illustrations will help little ones learn not to fear the Reaper, whom he shows contentedly sipping a juice box. The quirky watercolor scenes support Thornburgh's offbeat narrative perfectly. . . . Between the popularity of Halloween and el Día de los Muertos, some families will find Skulls! a useful tool for comforting and educating young children who may find the holidays' skeleton-heavy imagery unsettling. Parents and teachers will also likely appreciate the list of skull facts in the end matter, ideal for engaging a skull's contents. This authoritatively positive demystification of cranial bones—with its recurring theme of grilled cheese appreciation--is sure to have preschool through early elementary-aged readers shouting, 'I love my skull!'"

– Shelf Awareness

"Amusing and engaging. Through clever comparisons (a skull is “a car seat for your brain”) and dialogue, the book brilliantly explains the purpose of this set of bones."

– Parents Magazine