*Les Cobayes ou Cochons d'Inde* is a concise French-language volume by Jacques Bouloc, issued by Bornemann as a short paperback. The title points to guinea pigs and the colloquial sense of *cobayes* as test subjects, suggesting an accessible treatment of the animal rather than a lengthy study. With thirty-four pages, the work appears suited to quick reading and introductory information, likely for readers seeking basic facts about care or behavior. The available catalog information is sparse, so this description avoids adding unverified details; it presents the work as a brief, practical title within the publisher’s small-format offerings.