Popcorning is the most joyful thing to witness

Guinea pigs express happiness through "popcorning" — sudden random jumps into the air. The first time I saw my piggies do this after I expanded their enclosure, I laughed out loud. It's the most joyful, silly behaviour. Once you've witnessed popcorning you understand completely why guinea pig owners are so enthusiastic. Happy guinea pigs are an absolute delight.