The nurseries overflow with messy pets—nor does Puck ever remember to feed his guinea-pig.
This is a quite peculiar group, characteristic for the blood of the guinea-pig.
According to Jackson and Moore a rise of temperature does not accompany scurvy in the guinea-pig.
A guinea-pig inoculated in the eye 26th May was seized with rabies 10th September.
Complement is usually derived from a guinea-pig, since the serum of this animal is higher in complement than that of most animals.
The latter was tamed by the Incas, and is the ancestor of the guinea-pig.
Pete sez that this guinea-pig is the only one in the world what has a tail.
guinea-pig tell him that he made no promise was to help him with Dry-bone.
Kill one guinea-pig at the end of the second week and make a complete post-mortem examination.
It includes the tapir, the agouti, the guinea-pig, and the peccari.
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.
guinea pig guin·ea pig (gĭn'ē)
Any of various small, short-eared domesticated rodents of the genus Cavia, having variously colored hair and no visible tail. They are widely kept as pets and often used as experimental animals.
Person or thing used in an experiment, sometimes without agreement: the guinea pigs for her cooking