What is a "guinea pig"?

The guinea pig, also known as the cavy, is a small domesticated rodent that is often kept as a popular pet. Guinea pigs are native to South America and have been domesticated for thousands of years. They have a compact body with short legs, rounded ears, and no visible tail. Guinea pigs have a variety of coat colors and patterns, and they typically have dense fur that can be short or long, depending on the breed. They have large, expressive eyes and a rounded head with a distinctive snout. Guinea pigs are social animals that are known for their gentle and friendly nature, making them popular as pets, especially for children. They are herbivores and primarily eat hay, fresh vegetables, and a specially formulated guinea pig pellet diet.