What the record should include
- Identity
- Name, date of birth or arrival, sex as confirmed by a vet, castration if done, colour and coat type, and a recent photo.
- Weight
- A weigh-in every week, as the RSPCA recommends: it’s your best early warning.
- Teeth and nails
- The weekly check, the dates of nail trims, and every dental treatment done by your vet.
- Vet visits
- Appointments, diagnoses, tests and operations, including castration or spaying.
- Treatments
- Medicines given, for how long, and above all any they reacted badly to: some antibiotics are dangerous for guinea pigs.
- Diet
- Their hay, their pellets, the vegetables they’ll eat, and the date the bag of pellets was opened.
- Contacts
- Your vet, the nearest out-of-hours vet able to treat guinea pigs, and their insurer if they’re insured.
No vaccinations, but a yearly check-up
According to the MSD Veterinary Manual, guinea pigs don’t need vaccinations; the Royal Veterinary College adds that they don’t need yearly worming either. However, both the MSD manual and the RSPCA recommend a vet check-up at least once a year: problems are easier to treat when they’re caught early.
Choose a vet experienced with guinea pigs, often described as an exotics vet, and also note an out-of-hours vet who sees guinea pigs: in an emergency, there’s no time to search.
The weekly check
- Weight, recorded for each guinea pig.
- Incisors: not too long, broken or loose.
- Nails and foot pads.
- Coat and skin: bald patches, scabs, itching.
- Eyes, nose and ears: no discharge.
- A clean bottom, checked twice a day in warm weather.
According to the RSPCA, a quick daily look is still needed: check that they’re eating, drinking and producing a normal amount of droppings.
When they arrive: the information to collect
Ask the breeder, rescue centre or previous owner for their date of birth, usual diet and any past treatment. Blue Cross advises having the guinea pig examined and their sex checked by a vet before taking them home: it’s also the moment to start their record.
Keep to the same diet at first: guinea pigs don’t cope well with changes to their routine.
Travelling abroad: different rules from dogs and cats
GOV.UK’s rules for taking a pet abroad cover dogs, cats and ferrets. For a guinea pig, it’s the rules of the country you’re going to that apply: check them with your vet and that country’s authorities before you go.
To come back into Great Britain from an EU country, you must sign a declaration that your pet is not for sale or transfer of ownership, is healthy and fit to travel, and was born and bred in captivity. From outside the EU, rodents need a rabies import licence from the Animal and Plant Health Agency (APHA) and 4 months in quarantine on arrival, according to GOV.UK.
In an emergency
The health record in everyone’s pocket
MyArk keeps each guinea pig’s health record on the iPhone of everyone you invite: weigh-ins, care, treatments and vet visits, with no time limit on the history, even without a subscription.
- One record per guinea pig, with their past treatments
- Upcoming reminders, sent to everyone in the household
- The weight chart and your vet’s contact details
- With MyArk Complete, a PDF export for your vet or pet sitter
Common questions
Do guinea pigs need vaccinations?
No: according to the MSD Veterinary Manual, guinea pigs don’t need vaccinations. A yearly check-up with your vet is still recommended.
Should I worm my guinea pig every year?
No, not routinely, according to the Royal Veterinary College. Your vet treats if parasites are found.
How often should my guinea pig see a vet?
At least once a year for a check-up, and straight away at the slightest unusual sign: they hide illness for a long time.
What should I record in my guinea pig’s health record?
Their identity, weekly weigh-ins, teeth and nail checks, vet visits, treatments and any they reacted badly to, their diet and your vet’s contact details.
Can I take my guinea pig abroad from the UK?
GOV.UK’s pet travel rules for going abroad cover dogs, cats and ferrets, so for a guinea pig the rules of the destination country apply. To return to Great Britain from the EU you need a signed declaration; from outside the EU, an import licence and 4 months’ quarantine.
Why record medicines they reacted badly to?
Because some medicines, especially certain antibiotics, can make guinea pigs seriously ill. This information helps your vet, particularly one who doesn’t know your guinea pig yet.
Sources
Benchmarks checked on 21 October 2026 in the documents below, then rewritten in plain English. They do not replace an examination and advice from your vet, who adapts care to your pet and to where you live.
- MSD Veterinary Manual, Routine Care of Guinea Pigs (2025)
- Royal Veterinary College, Beaumont Sainsbury Animal Hospital (exotics service), Caring for your guinea pig
- RSPCA, How to take care of your guinea pigs — booklet (2023)
- RSPCA, Guinea pig health and welfare
- Blue Cross, Guinea pig care
- MSD Veterinary Manual, Common Health Problems of Guinea Pigs (2025)
- GOV.UK, Taking your pet dog, cat or ferret abroad
- GOV.UK, Bringing your pet to Great Britain
