A male guinea pig is called a boar, a female guinea pig is called a sow [source]
NICKNAMES: Hammer Jammer, Hammer-nation
Hammy is Pig #1 and the Official Spokes-Pig at HappyCavy.com. She’s a happy-go-lucky guinea pig who’s a little too big for pop-corning now but she definitely tries!
Hammy is a little on the shy side but when her sisters are up to something interesting, she will be there in a second. Hammy loves munching on lettuce and running around her home early in the morning to make sure her guinea pig sisters get an early start!