Guinea pigs: ageing and care basics
Guinea pigs are gentle, chatty and social. Many live around five to seven years, sometimes longer. Their needs are specific, and as they age, small changes in appetite or movement matter. This guide covers general basics. A vet who sees small mammals is the best source of advice for your own animals.
When is a guinea pig older?
Guinea pigs are often considered senior from around four to five years. You may notice slower movement, a duller coat, sleeping more or weight loss. Take notes to share with your vet.
Diet basics
Like rabbits, guinea pigs need a lot of hay. Unlimited grass hay keeps the teeth worn and the gut moving. A diet generally also includes:
- Fresh leafy vegetables and some other vegetables, as advised
- A small amount of plain guinea pig pellets
- Fresh water every day
Guinea pigs cannot make their own vitamin C, so they need it in their food, a long-established fact. Vets commonly suggest vitamin C-rich vegetables and pellets made for guinea pigs. Ask your vet how to cover this for your animals, and avoid guessing at amounts.
Changes in diet should be slow. A guinea pig that stops eating needs a vet quickly.
Teeth
Guinea pig teeth grow constantly. Poor wear can cause painful spurs. Watch for:
- Dropping food or refusing hard items
- Drooling
- Weight loss
- A wet chin
Regular dental checks are a normal part of care, and an older animal may need them more often.
Weighing and body checks
Weigh each guinea pig weekly, on kitchen scales, and write the number down. A drop in weight is often the first sign that something is wrong. Check:
- Eyes: clear and bright
- Nose: dry
- Coat: no bald patches or crusting
- Feet: no sores on the soles
- Bottom: clean
Nails need regular trims. Older animals may also need help keeping the rear end clean.
Housing for older guinea pigs
Pet guinea pigs need a large enclosure with room to run. As they age:
- Keep floors soft and non-slip, with plenty of bedding
- Avoid high ramps and levels. Use low, gentle ones
- Provide hideaways with wide entrances, so stiffer animals can get in
- Place hay, food and water within easy reach
- Keep them in a draught-free spot with a steady, moderate temperature
Guinea pigs are sensitive to heat and damp. Keep them out of direct sun and strong heat.
Company
Guinea pigs are social and normally kept in pairs or small groups. Loneliness can affect them. If a companion dies, talk to your vet or a rescue group about finding a suitable partner.
Daily time with you, gentle talking and floor time in a safe, fenced area give them stimulation. Tunnels, cardboard boxes and safe chews keep them busy.
Common issues in older guinea pigs
Owners and vets commonly discuss:
- Dental problems
- Sore feet from hard flooring or damp
- Skin problems, mites and lice
- Breathing problems, particularly with damp or dust
- Urinary issues, including bladder stones
- Weight loss
None of these is for owners to diagnose. They are reasons to book a vet visit.
Signs to call the vet
- Not eating for a day
- Laboured, noisy or wet breathing
- Discharge from eyes or nose
- Difficulty urinating or blood in urine
- Limping or sore feet
- Lumps or skin changes
- Sitting hunched, still and fluffed up
- Diarrhoea
Guinea pigs hide illness, and they can decline fast. When you are unsure, call.
Supplements and guinea pigs
It is natural to look for ways to support an older pet. Guinea pigs, though, have a sensitive digestive system and specific dietary needs. Never give them products designed for dogs, cats or other animals. Ask a vet familiar with guinea pigs before adding anything beyond their usual food.
The takeaway
Hay, fresh vegetables, the right vitamin C, careful weighing and a comfortable, warm and safe enclosure are the core of senior guinea pig care. Small, regular checks catch changes early. Keep notes, see an exotics-experienced vet and adjust things gently as your animals age.
What to do next
PAWER is for dogs today. It is not for guinea pigs, and we do not suggest giving it to them. Some compounds that suit dogs are not suitable for other species, so ask your vet before you add anything to their routine.
- Join the waitlist for updates
- If you also have a dog, see PAWER for dogs
General information for pet owners. Not veterinary advice.