What is the common name for a "cavy"?

The term "cavy" refers specifically to a group of rodents that includes the guinea pig. The guinea pig is a domesticated species of cavy that has been bred for various characteristics over time, including size, color, and fur type. Originally native to the Andes of South America, these animals have become popular pets due to their social and gentle nature.

The other options reflect different species that are not related to the cavy group. A hamster, rabbit, and gerbil belong to distinct taxonomic families and do not share the same characteristics or classification as guinea pigs. Understanding the unique traits and classifications of these animals is vital in veterinary practice, as each species has different care requirements, behaviors, and health considerations. Thus, recognizing that "cavy" is the term used for guinea pigs helps clarify their place in the broader category of small mammals commonly kept as pets.