Cavy Care Guide for Beginners
Cavy (guinea pig) housing requirements, essential vitamin C supplementation, social needs, and diet for healthy, happy cavies.
Overview
The Cavy — more commonly known as the Guinea Pig — is one of the friendliest and most vocal small pets you can own. They come from the highlands of South America. They squeak, purr, rumble, and jump for joy (“popcorning”) when happy.
Cavies are herd animals. In several countries (including Switzerland), it is actually against the law to keep a cavy alone. At least two cavies is the minimum — they need companionship to be happy.
They are gentle animals that very rarely bite. They make wonderful family pets when given the right care.
Habitat & Housing
Most pet store cages are too small for cavies. Here is what they actually need:
| Number of Cavies | Minimum Floor Space |
|---|---|
| 2 | 10.5 square feet |
| 3–4 | 13+ square feet |
The best cage is a C&C cage (cubes and coroplast panels). They are affordable, easy to build, and can be made as large as you need. A 2×4 grid base is the minimum for two cavies.
Always use solid flooring. Wire-bottom cages hurt cavies’ feet badly. Use paper-based bedding (like Carefresh) at 2–3 inches deep.
Keep the room between 65–75°F. Cavies get heatstroke easily above 80°F. Keep them away from direct sunlight and heating vents.
Diet & Feeding
The most important fact about cavy nutrition: cavies cannot make their own vitamin C. They must eat it every day or they will develop scurvy — a painful, serious disease.
| Food | Amount |
|---|---|
| Timothy hay | Unlimited — always available |
| Fresh vegetables | 1 cup per cavy per day |
| High-quality pellets | ⅛ cup per cavy per day |
| Fresh water | Unlimited — in a ceramic bowl |
The best vitamin C source: bell pepper. One small slice per cavy per day covers most of their vitamin C needs. Also good: kale, parsley, cilantro, and broccoli.
Other good vegetables: romaine lettuce, cucumber, zucchini, dandelion greens.
Do not feed: iceberg lettuce, muesli pellet mixes, potato, rhubarb, onion, garlic, avocado, or large amounts of fruit.
Do not put vitamin C drops in the water. Vitamin C breaks down fast in water and light. Fresh vegetables are the reliable way.
Health & Common Issues
A healthy cavy is active, social, and vocal. It eats hay constantly and “popcorns” when excited. Bright eyes and a smooth coat are good signs.
Scurvy causes swollen joints, rough fur, and weakness. It comes on fast. Give more bell pepper immediately. Recovery is fast when caught early.
Respiratory infections are serious. Sneezing, runny nose, and lethargy need a vet visit right away. Cavies can get very sick quickly.
Dental problems happen when cavies do not eat enough hay. Their teeth grow forever and must wear down. Signs: drooling, weight loss, not eating. More hay prevents this.
Handling & Temperament
Cavies are gentle and very rarely bite. They usually squeak when first picked up, then settle quickly.
Always use two hands. Place one under the bottom and one around the body. Hold close to your chest so the cavy feels secure. Never hold just by the front.
Many cavies will purr softly when they feel happy and content in your arms. This sound is very rewarding!
Children handle cavies very well when taught the correct technique. They are excellent family pets.
Cost & Commitment
| Item | Cost |
|---|---|
| Pair of cavies (from rescue) | $20–$60 |
| 2×4 C&C cage | $50–$80 (DIY) |
| Monthly hay + pellets + bedding | $30–$50 |
| Annual vet visit | $50–$150 |
Cavies live 5–7 years. They need daily fresh vegetables, constant hay, regular cage cleaning, and your company.
Frequently Asked Questions
Can a cavy live alone?
No. Cavies are herd animals and suffer from loneliness. Switzerland requires cavies to have a companion by law. Always keep at least two.
Do cavies and rabbits make good companions?
No. Rabbits can injure cavies with powerful kicks. They also have different communication styles and different food needs. Keep them in separate enclosures.
What does purring mean in a cavy?
A low purr means your cavy is content — similar to a cat. A higher-pitched vibrating sound (called a “rumblestrut”) is a dominance display. Both are completely normal.
How often should I clean the cage?
Spot-clean wet spots daily. Do a full clean with fresh bedding every 3–5 days. Cavy urine is strong-smelling and frequent cleaning makes a big difference.