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Small mammals

Guinea Pig Care Essentials: Space, Company, Hay and Vitamin C

The four things guinea pigs cannot do without, plus handling, health checks and the signs that mean a same-day vet visit.

By Priya RamanVeterinary review: Dr Hana Lindqvist7 min readPublished 2026-09-29Updated 2026-09-29
Illustration of a dog and cat resting at home beside a water bowl and lead

Always in pairs or groups

Guinea pigs are herd animals and become stressed when kept alone. Switzerland requires them to have company by law. Two sows, a neutered boar with sows, or a bonded pair of boars with plenty of space all work.

More space than most shop cages

Welfare charities recommend a living area of at least 120 cm × 60 cm for two guinea pigs, and more is better, with daily time in a larger safe run. Provide one hide per animal so nobody is cornered.

Diet: hay first, and daily vitamin C

Like humans, guinea pigs cannot make their own vitamin C. Without it they develop scurvy: sore joints, bleeding gums and a rough coat.

  • Unlimited fresh grass hay, making up most of the diet
  • A cup of leafy greens and vitamin C-rich vegetables such as bell pepper daily
  • A small measured portion of guinea pig pellets with added vitamin C
  • Fresh water in a bottle and a bowl, changed daily
  • No muesli mixes, which encourage selective feeding

Handling and weekly checks

Scoop with one hand under the chest and one under the hindquarters, and hold close to your body. Weigh weekly: a steady loss is often the first sign of illness in a species that hides pain.

See a vet the same day if

  • Your guinea pig stops eating or passing droppings
  • Breathing is noisy or laboured
  • There is drooling, wet chin or dropping food (possible dental disease)
  • It is hunched, lethargic or losing weight

Frequently asked questions

How long do guinea pigs live?
Typically five to seven years with good care.
Can guinea pigs live with rabbits?
Welfare organisations advise against it: rabbits can injure guinea pigs, and their diets and communication differ.

References

  1. Guinea pig care — RSPCA
  2. Guinea pig welfare needs — PDSA