ALA Booklist
Any aspiring cryptozoologist would love to have a Sasquatch for a best friend, but Boone is luckier than most because he actually does. Gentle, hairy Hugo and Boone first met in Big Foot and Little Foot (2018), and their second adventure gets going after Hugo explores an unoccupied section of Widdershins Cavern. Guided by his new monster detector e watchlike gadget earned by collecting Mad Marvin's Monster Cards finds evidence of the Green Whistler, a dreadful creature of legend. Alarming as that is, it's pushed from Hugo's mind when Boone shows up at Squidge School, asking to join Hugo's class. Funny misunderstandings ensue, but one takes a more serious turn when Hugo doesn't stick up for Boone. At that moment, however, Hugo's monster detector goes off, followed by a flash of green fur in the hall, and the two amateur cryptozoologists dash after it, mending their friendship as they go. This satisfying sequel is as relatable as the first, touching on childhood obsessions, worries, and thrills. A fun romp with valuable lessons in friendship and forgiveness.
Horn Book
Young Sasquatch Hugo, who lives in a cavern in the North Woods, accidentally meets a nine-year-old human named Boone. The two strike a fast friendship and together enjoy looking for "mysterious creatures"--when not attending school or working to overcome their cultural differences. Lively adventures for young cryptozoologists, with short chapters and copious drawings that make for nonintimidating page layouts.
Kirkus Reviews
Sasquatch Hugo and human Boone deal with monsters, stereotypes, and cultural misunderstandings in the follow-up to Big Foot and Little Foot (2018).After three years spent collecting wrappers from Mad Marvin's Monster Cards, Hugo has finally saved up enough to send in for a prize. What arrives is a wristwatch-style monster detector filled with weechie-weechie moths that will flap their wings noisily when monsters are near. Exploring Widdershins Cavern in search of monsters, the detector guides Hugo to a secret entrance to the Big Wide World—where green fur and bones indicate the presence of the Green Whistler, a creature rumored to eat young squidges like him. Meanwhile, home-schooled Boone turns up at the Academy for Curious Squidges, wanting to attend; while only one of the sasquatch kids is openly prejudiced against humans, Boone endures an escalating string of misunderstandings that's ended only by another crisis—the reappearance of the Green Whistler. Budding cryptozoologists Boone and Hugo pursue only to discover one last misunderstanding and a family history of cross-species friendship. The sasquatch humor and heroes' earnestness make for a compelling story with natural flow, and the turnabout scenarios in which white Boone operates as a minority among the sasquatches are thoughtfully done. A lovely story of using empathy to work through culture clashes. (final art unseen) (Fantasy. 5-9)