The domestic guinea pig is one of the cutest house pets, with an ever increasing popularity. The are also known as cavy or domestic cavy, which is a species of rodent belonging to the family Caviidae and the genus Cavia. Little known secret but guinea pigs are not native to Guinea, nor are they biologically related to pigs, and the origin of the name is still unclear.
They originated in the Andes of South America, and studies based on biochemistry and hybridization suggest they are domesticated descendants of a closely related species of cavy, the montane guinea pig. The montane guinea pig is the likely ancestor of Cavia porcellus, the cavy or domestic guinea pig and therefore do not exist naturally in the wild.
In today’s modern society, the domestic guinea pig has enjoyed widespread popularity as a pocket pet, a type of household pet. Their docile nature, friendly responsiveness to handling and feeding, and the relative ease of caring for them have made and continue to make guinea pigs a popular choice of pet. Organizations devoted to the competitive breeding of guinea pigs have been formed worldwide, and many specialized breeds with varying coat colors and textures are selected by breeders.
Guinea pigs are timid explorers and often hesitate to attempt an escape from their cage even when an opportunity presents itself. Still, they show considerable curiosity when allowed to walk freely, especially in familiar and safe terrain. Here’s one really cool fact about guinea pigs; when they become familiar with their owner they will whistle on the owner's approach.
They will also learn to whistle in response to the rustling of plastic bags or the opening of refrigerator doors, where their food is most commonly stored.