Guinea pig care for beginners

Guinea pigs are chatty, gentle and full of character. Many greet the rustle of a vegetable bag with excited squeaks and settle into clear daily routines. They are also often underestimated: they need company, room to roam, a carefully balanced diet and an owner who notices small changes. Here is what good care looks like in practice.

At least two: company comes first

Guinea pigs are herd animals. They communicate constantly, feel safer in numbers and can become stressed and inactive when kept alone. Welfare organisations generally recommend keeping at least two guinea pigs who get along. Same-sex pairs, such as two females or two males, can work well, as can a neutered male with one or more females. Introductions should be gradual and supervised.

Space, floor area and hides

Guinea pigs rarely climb or jump, so floor space matters far more than height. They like to run short laps, explore and graze, and they need places to retreat when something startles them. Many cages sold for guinea pigs are too small to live in full time, so owners often choose a large indoor pen or a secure, sheltered run instead.

• One hide per guinea pig, plus a spare, so nobody has to compete for shelter.
• A solid floor with soft, absorbent bedding, such as paper-based bedding or fleece liners, kept clean and dry.
• Hay in several spots, so everyone can eat without crowding.
• A quiet location away from loud speakers, direct sunlight and draughts.

Diet: hay, vegetables and vitamin C

Like rabbits, guinea pigs need lots of fibre and lots of chewing. A typical approach, which your vet can tailor to your animals, looks like this:

• Hay at all times: good-quality hay should form the bulk of the diet and keeps teeth and gut working.
• Fresh vegetables daily: a varied selection of leafy greens and other guinea-pig-safe vegetables, introduced slowly.
• Pellets in moderation: a small amount of pellets made specifically for guinea pigs, not for rabbits.
• Fresh water: refilled daily, with bottles and bowls cleaned regularly and checked for blockages.

Why vitamin C matters

Guinea pigs cannot produce their own vitamin C, so it has to come from their food every day. A shortage can lead to a scurvy-like illness, with signs that may include weakness, sore or swollen joints and a rough coat. Vegetables rich in vitamin C help, and guinea pig pellets are usually fortified, although vitamin C breaks down over time once a bag is opened. Ask your vet whether your guinea pigs’ diet covers their needs before you add any supplement.

Teeth that never stop growing

All of a guinea pig’s teeth grow continuously, and steady chewing on hay keeps them at the right length. If teeth overgrow or wear unevenly, a guinea pig may drool, drop food, eat more slowly or lose weight. Dental problems are not something to fix at home: they need a vet with experience in small mammals.

Sensitive to heat and cold

Guinea pigs cope poorly with heat and can struggle in warm, humid conditions, in direct sun or in a stuffy room. They are also sensitive to cold and damp. Keep their home in a stable, moderate environment, away from radiators, sunny windows and draughty doors. If they spend time outdoors in mild weather, they need full shade, shelter and a plan to bring them inside when it turns too hot or too cold.

Handling gently

Many guinea pigs are nervous at first and dash for cover when a hand comes from above. With time and patience, lots of them learn to enjoy lap time. When you pick one up, use two hands, one around the chest and one supporting the hindquarters, and hold them close to your body. Sitting on the floor reduces the risk of a fall.

• Let new guinea pigs settle for a few days before you try to handle them.
• Offer food from your hand to build trust.
• Keep lap sessions short at first and put them back if they become restless.
• Children should handle guinea pigs while sitting down, with an adult supervising.

Sounds and body language

Guinea pigs have a wide vocabulary. Learning it helps you recognise both contentment and stress.

• Wheeking: a loud, high-pitched whistle, often in anticipation of food or when they hear you coming.
• Purring: a low, steady rumble usually signals contentment, while a short, higher-pitched purr can mean irritation.
• Rumbling while swaying: often part of courtship or showing who is in charge.
• Teeth chattering: a warning to back off, usually aimed at another guinea pig.
• Popcorning: sudden little jumps in the air, often seen in young, happy guinea pigs.

Health checks and weighing

Like other prey animals, guinea pigs tend to hide illness, so routine checks help you spot problems early. Weighing them regularly on kitchen scales is one of the most useful habits you can build: a drop in weight, sudden or gradual, is often one of the first clues that something is wrong.

• Weekly weigh-in: record each guinea pig’s weight and look out for a downward trend.
• Eyes and nose: bright and clean, without crusting or discharge.
• Coat and skin: no bald patches, scabs or constant scratching.
• Feet and nails: look for sore feet and trim nails when needed.

Daily and weekly checklist

Every day

• Top up the hay and refresh the water.
• Offer fresh vegetables.
• Spot-clean wet or soiled bedding.
• Watch that each guinea pig eats, moves and interacts normally.
• Spend some calm time together.

Every week

• Weigh each guinea pig and write down the result.
• Give the enclosure a full clean.
• Check teeth, eyes, coat, feet and nails.
• Wash food bowls, water bottles and hides.