The details in Wells' illustrations showcase Felix's and Fiona's different personalities brilliantly and cleverly stretch the story out to the endpapers. Concise and kid-appropriate language combines with darling drawings (who can resist cute little guinea pigs?) for another feather in Wells' literary cap.
--Kirkus Reviews
A worthy addition to memorable picture books about bullying and self-worth, like Helen Lester's Hooway for Wodney Wat (HMH, 2002) and Anna Dewdney's Llama, Llama and the Bully Goat (Viking, 2013).
--School Library Journal
With a cast of guinea pigs who correspond to instantly recognizable human types, this series opener from Max and Ruby creator Wells humorously captures the fluidity of social dynamics--and proves that it's possible to captain one's own destiny.
--Publishers Weekly
The notion of a shy protagonist standing up for himself in order to fend off a friend's goofy ideas is an interesting twist on the theme of self-assurance. Fine for reading aloud.
--Booklist Online
Felix personifies the problems that most children face, and provides a useful conversation starter about bullying and standing up for oneself.
--School Library Connection