Guinea pigs may be small but the compact rodents get a lot of attention at Brookfield Zoo Chicago.

On an island in Papua New Guinea, a 3-foot-long creature with a black tongue made itself at home in a village garden — or it tried to, at least. Locals spotted the “smooth” animal and caught it. They ...

Researchers reveal that the guinea pig pre-implantation embryo is very similar to the human embryo, spurring a better understanding of infertility and early human development.

The longest-living recipient of a genetically engineered pig kidney has had the organ removed after experiencing acute organ rejection, surgeons at New York City-based NYU Langone told The New York ...

An Alabama woman who lived with a pig kidney for a record 130 days had the organ removed and is back on dialysis.

We often see conversations among cat and dog parents about the challenges of grooming, but as any small animal lover can tell ...