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✨ 21 Fun Facts About Guinea Pigs

They are not pigs, not from Guinea, and cannot make their own vitamin C. Delightful cavy trivia.

Guinea pigs are far stranger and more wonderful than they let on. Here are twenty-one facts to make you love them even more.

  1. They are not pigs, and they are not from Guinea. They are cavies from the Andes of South America.
  2. Like humans, they cannot make their own vitamin C and must get it from food.
  3. A happy guinea pig 'popcorns', leaping and twisting in the air for pure joy.
  4. That loud squeal when the fridge opens is 'wheeking', and it is aimed squarely at you.
  5. They have a range of at least 11 distinct sounds.
  6. Their teeth never stop growing, which is why they need endless hay.
  7. Babies are born fully furred with their eyes open and can eat solids within a day.
  8. They were domesticated around 5000 BC, first as food and for ceremonies in the Andes.
  9. A group of guinea pigs is a herd; the males are boars, females are sows, and babies are pups, just like real pigs.
  10. They can live 5 to 8 years, far longer than most small pets.
  11. They sleep very little and in short bursts, often with their eyes open.
  12. They are crepuscular, most active at dawn and dusk.
  13. A guinea pig has four toes on each front foot and three on each back foot.
  14. They 'rumblestrut', swaying and purring, to flirt or show who is boss.
  15. They cannot jump or climb well, which is why they need a ground-level home.
  16. They recognise their owners and will call out when they hear you.
  17. The world's oldest guinea pig on record lived to nearly 15.
  18. In parts of the Andes they are still a traditional food, and a cultural icon.
  19. They chatter their teeth when annoyed, a clear 'back off'.
  20. They need companions so much that in some countries keeping just one is illegal.
  21. Long-haired breeds like the Peruvian can grow a coat over 20 inches long.
Want to test your fluffy knowledge further? Meet all the breeds or draw a card from our guinea pig tarot.

Last updated August 2026 · Written from years of keeping long-haired guinea pigs in the Houston area. This is general care information, not veterinary advice. For anything medical, please see an exotic vet.

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