Topics: First introduction of Guinea Pigs... Is this good?
The domestic guinea pig plays an important role in the folk culture of many Indigenous South American groups, especially as a food source, but also in folk medicine and in community religious ceremonies.  Since the 1960s, efforts have been made to increase consumption of the animal outside South America. 
In Western societies, the domestic guinea pig has enjoyed widespread popularity as a household pet since its introduction by European traders in the 16th century. Their docile nature; friendly, even affectionate responsiveness to handling and feeding; and the relative ease of caring for them, continue to make guinea pigs a popular pet. Organizations devoted to competitive breeding of guinea pigs have been formed worldwide, and many specialized breeds of guinea pig, with varying coat colors and compositions, are cultivated by breeders.
Biological experimentation on guinea pigs has been carried out since the 17th century. The animals were frequently used as model organisms in the 19th and 20th centuries, resulting in the epithet "guinea pig" for a test subject , but have since been largely replaced by other rodents such as mice and rats. They are still used in research, primarily as models for human medical conditions such as juvenile diabetes , tuberculosis , scurvy , and pregnancy complications.