Origin of guinea pig
Examples from the Web for guinea pig
The guinea-pig, when full-grown, is not much bigger than a large rat.
In the tenth week the bacillus present when in pure culture killed a guinea-pig in thirty-six hours.Essays In Pastoral Medicine|Austin Malley
Wilhelm Bischoff of Munich: works on the history of the development of the rabbit, dog, guinea-pig, roe-deer.The Last Link|Ernst Haeckel
An' when Guinea-pig go, Rabbit ask Guinea-pig to go an hunting.Jamaican Song and Story|Walter Jekyll
Kill the second guinea-pig at the end of the second week and examine carefully.The Elements of Bacteriological Technique|John William Henry Eyre
Word Origin for guinea pig
1660s, native to South America and perhaps so called either because it was first brought back to Britain aboard Guinea-men, ships that plied the triangle trade between England, Guinea, and South America [Barnhart, Klein]; or from confusion of Guinea (q.v.) with the South American region of Guyana (but OED is against this). In the extended sense of "one subjected to an experiment" it is first recorded 1920, because they were commonly used in vivisection experiments.