A small Brazilian rodent (Cavia porcellus or Cavia cobaya), about seven inches in length and usually of a white color, with spots of orange and black. Called also cavy. It is the domesticated form of the wild cavy, often kept as a pet and used commonly as an experimental animal in laboratory research.

Any animal or person used in an experiment; -- also applied to people who are unwillingly or unknowingly subjected by authorities to policies or procedures which might cause bodily or mental harm.

The guinea pig has been used as a model animal in many animal model studies; developmental, dietary, tetragenic, including the effects of maternal temperature on development. Mouse

a person who is subjected to experimental or other observational procedures; someone who is an object of investigation; "the subjects for this investigation were selected randomly"; "the cases that we studied were drawn from two different communities"

stout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research

a friendly little animal which makes a good pet for children and adults

a rodent, just like mice, rats and hamsters

a small, furry animal in the genus Cavia

a small rodent whos real name is a cavy

Guinea pigs (also called cavies) are rodents belonging to the family Caviidae and the genus Cavia, originally indigenous to the Andes.

The Guinea pig films (from the Japanese "ginipiggu") were a series of 1980s Japanese horror films with extremely detailed special effects. According to Snopes, the films became infamous when Charlie Sheen mistook one for a snuff film and contacted the FBI to report it.