Guinea Pigs express their happiness through a movement known as “popcorning.” The maneuver is named as such because it involves a sudden, directly upward jumping action, which is often performed without warning¹⁾

Unlike other creatures, guinea pigs babies are born fully formed with teeth and fur. They need just a few hours to start running around. ²⁾

Guinea pigs can keep their eyes open while sleeping. ³⁾