The biggest stories of the day delivered to your inbox.

Inside the spacecraft was a mannequin named Ivan Ivanovich, a dog named Chernushka, dozens of mice, some reptiles, and the first-ever guinea pig to fly to space. The dummy and his gang of animals ...

Warner had become the uniter of worlds. The guinea pig had grown up to be the big dog, in his own yard anyway. It's an interesting fact that the 15 triple tons that have been scored in this ...

Because of that, people interested in more than one guinea pig as a pet are encouraged to get the same sex. Although all of the guinea pigs are available for adoption, some had skin issues and are ...