Suitable foods
Provide continuous quality grass hay, guinea-pig-specific vitamin C-fortified pellets and clean suitable greens. Bell pepper is an example of a vitamin C-containing vegetable.
Guinea Pig Care Guide
Guinea pig care: fiber-rich diet, vitamin C, safe flooring, water and warning signs.
Species-specific careNutrition and environmentSources & limitations
Before using this guide
This page is a starting point for responsible care, not a veterinary diagnosis. Needs vary with species, age and health. Verify the exact species and speak to an appropriately experienced veterinarian.
🌍 Native range, habitat & climate
Native range / origins
Domesticated guinea-pig lineage from Andean South America
What wild habitat means for care
A large solid-floored habitat, compatible social company, hay and vitamin C are important.
Climate and temperature
Merck housing reference is 18–26°C with 30–60% relative humidity; monitor overheating and airflow.
Outdoor climate is not a thermostat setpoint. Each species needs its own husbandry plan.
Fiber-rich diet
Suitable grass hay is a dietary foundation for adult guinea pigs, with species-specific pellets and safe vegetables. Change diets gradually.
Vitamin C requirement
Guinea pigs cannot synthesize enough vitamin C. Consult a veterinarian about fresh food sources and supplementation when indicated.
Housing and water
Provide a roomy, ventilated enclosure with solid flooring, hiding areas and clean water. Check bottle nozzles and hygiene daily.
Urgent warning signs
Seek prompt exotic-veterinary care for lack of appetite, fewer droppings, marked weakness or breathing problems.
Daily care and early-warning checklist
- Keep suitable hay and clean water available; discuss a species-appropriate vitamin C source with an experienced veterinarian.
- Offer compatible social companionship, hiding areas and clean, dry footing.
- Monitor appetite, droppings, weight trend and chewing or dental changes.
- Seek prompt small-mammal veterinary care for refusal to eat, weakness or breathing difficulty.
This checklist is not a substitute for an individual examination. Dated notes on significant changes can help at a veterinary visit.
EVIDENCE-INFORMED CARE
Feeding, unsafe foods & common health concerns
Guidance varies by exact species, age and medical conditions. A food a pet likes is not necessarily safe or nutritionally balanced.
Foods and practices to avoid
Rabbit pellets may not meet guinea pigs’ vitamin C needs. Avoid frequent sugary treats, spoiled feed and abrupt diet changes.
Common health problems
Vitamin C deficiency, dental disorders, respiratory disease and skin problems can occur. Track weight, chewing and enclosure hygiene.
Urgent signs
Refusal to eat, fewer droppings, drooling, breathing difficulty or marked lethargy need prompt exotic-mammal veterinary attention. Do not give human medicines or arbitrary antibiotics.
Supporting sources: Veterinary source 1 · Veterinary source 2
What this guide does not do
Lifespans, healthy weights, vaccination needs, safe foods and optimal temperatures cannot be generalized to every animal. This page does not prescribe drugs, vaccines or treatment. Seek prompt veterinary help for acute symptoms.
Sources and review
Merck Veterinary Manual — source
Source consulted: 22 October 2026. Scientific guidelines may change.
Related tools and guides
Animal age and life-stage calculator
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