HB – Montreal Gazette

Toronto 's Kenneth Oppel, who set this story in 1973-75, has created a thought-provoking tale that deals not only with the stuff of sibling rivalry, fitting in, teenage sexual awareness and coming of age, but also with such complicated issues as animal rights vs. scientific study. It's a testament to Oppel's talents as a writer that he has worked these elements into an engaging story, parts of which will tug on the reader's heartstrings and may necessitate a Kleenex or two. 

– Montreal Gazette