Caviinae is a subfamily of rodents that includes various species of cavies, also known as guinea pigs. Some synonyms for the term Caviinae include the terms Caviomas, Cavia, and Caviidae. The subfamily is characterized by their small size, sturdy built, and short ears. They are native to South America and are popular as pets in many parts of the world. Caviinae is an important part of the food chain in the ecosystems in which they live. While some species are endangered, others are popular as livestock for their meat and fur. Understanding the synonyms for Caviinae is important to better understand this subfamily of rodents.