Peruvian

The Peruvian is a long-haired breed of domestic guinea pig (Cavia porcellus), best known among cavy keepers for a fine, silky coat that never stops growing and, on a well-presented show animal, trails past the body right to the floor. Hair grows forward over the head as well as back over the rump, so a fully coated Peruvian can be genuinely tricky to tell front from back at a glance.

Temperament-wise the breed is friendly, placid, and easy to handle, which suits both pet owners and the show bench. Adults are a medium-sized rodent, usually weighing somewhere between 700 and 1,200 grams, with sows generally lighter than boars.

The long coat is what defines the breed and what it asks of you as an owner. Most pet homes keep the hair clipped short for comfort and hygiene, while show breeders maintain full length with daily grooming and wrapping. Either way, a Peruvian needs a good deal more coat care than a short-haired guinea pig such as the American.

Who it suits

The Peruvian suits an owner who can commit to regular, often daily, grooming. Someone after a calm companion who does not mind keeping the coat brushed out or trimmed will get on well with the breed. It suits a low-maintenance household less well, and it is not right for a home that cannot keep at least one companion guinea pig alongside it, since the species is highly social and should not be housed alone.

The domestic guinea pig, Cavia porcellus, was domesticated in the Andean region of South America, in what is now Peru, Bolivia, Ecuador, and Colombia. Archaeological evidence points to domestication several thousand years ago, when Andean peoples raised the animals for food and used them in ritual and folk medicine. They remain a traditional food animal in parts of the Andes today, where they are known as cuy.

Guinea pigs reached Europe in the 16th century through Spanish and Dutch traders, after which they were kept as exotic pets and bred for appearance rather than for meat. Over time fanciers developed distinct coat types, including the long-haired forms that would eventually reach New Zealand with later importers and the pet fancy.

The Peruvian is one of the oldest long-haired varieties recognised in the guinea pig fancy. The breed takes its name from the country tied to the species' origin, though the long coat itself was fixed through European and later international breeding programmes rather than appearing in wild or working animals. The Silkie (or Sheltie) and the curly-coated Texel were developed later as related long-haired breeds.

Any guinea pig entering New Zealand today, whether for the pet trade or the show fancy, is subject to Ministry for Primary Industries import health standards and a period of quarantine, part of the biosecurity controls that keep exotic pests and disease out of the country. The Peruvian is recognised by cavy clubs across New Zealand and is a regular entrant in the long-haired classes at agricultural and pet shows.

The Peruvian has the compact, rounded body typical of the guinea pig, but its outline is dominated by the coat. The hair is long, straight, and fine, growing from a centre parting along the back and falling to both sides. Two rosettes on the rump push the coat forward, so the longest hair sweeps over the face and head, often forming a frontal sweep that hides the eyes entirely. In full show coat the hair can reach the ground and exceed the length of the body itself.

Coat and colours

The coat comes in the same range of colours and patterns seen right across the guinea pig fancy, including solid self colours, agouti ticking, and tortoiseshell and white or tri-colour patterns. Texture is the key point: it must be straight and silky rather than curly or coarse. Curl or harshness in the coat points to another breed, such as the Texel. Because the hair never stops growing, coat length on any given animal reflects its age and how well it has been maintained.

Peruvians have a reputation as one of the more placid guinea pig breeds, which is just as well given how much handling the coat demands. They are friendly and gentle, and most settle quickly into a routine of being picked up, brushed, and groomed. A relaxed temperament is part of why the breed does well on the show bench, where animals need to tolerate handling by judges without fuss.

With people the breed is sociable and tends to learn to recognise its owners, often calling out at feeding time. Under supervision it can be a good companion for calm older children, though younger children should always be shown how to handle a guinea pig carefully. The long coat means the breed suits gentle handling rather than rough play.

Guinea pigs are herd animals through and through. A Peruvian kept on its own is prone to stress and boredom, so the species should always be kept in pairs or small groups. Same-sex pairs, or a desexed male housed with females, are common arrangements. Introductions should be gradual, but the breed's calm nature generally helps it settle peacefully alongside other guinea pigs.

Coat care is the biggest difference between a Peruvian and a short-haired guinea pig. The hair grows continuously and tangles easily, so it needs brushing often and keeping clean around the rear end. Most pet owners keep the coat trimmed short for hygiene and comfort, while show owners maintain full length using wraps to protect the hair from breakage.

Grooming

• Brush the coat daily with a soft brush or wide-tooth comb to stop mats forming.
• Trim hair around the rear end and feet so it stays clean and free of droppings.
• Spot-clean soiled hair, and bathe only when needed using a small-animal shampoo, drying the coat thoroughly afterwards.
• For show animals, section the coat and use wraps to keep length tidy and prevent breakage.
• Check and trim nails every few weeks.

Exercise

• Give daily time in a safe, enclosed floor area or run for movement and foraging.
• Keep the cage uncluttered so the long coat does not snag on hides or toys.
• Offer tunnels and foraging opportunities rather than wheels or balls, which are unsafe for guinea pigs.

Environment

Keep guinea pigs indoors or in a sheltered, predator-proof space at a steady temperature of roughly 18 to 24 C, away from draughts and direct sun. New Zealand's changeable weather, from damp Auckland winters to sharp Otago frosts, means temperature swings need watching closely. The long coat makes Peruvians sensitive to damp and heat, so bedding must stay clean and dry. Solid-floor housing with soft bedding protects both the feet and the coat.

Like all guinea pigs, the Peruvian is a strict herbivore with a hindgut built to run on a high-fibre diet. Unlimited grass hay, such as timothy or good-quality meadow hay, should make up the bulk of the diet, needed both for digestion and to wear down teeth that never stop growing. Fresh water must always be on hand.

Guinea pigs cannot make their own vitamin C and must get it from their food. A guinea-pig-specific pellet fortified with stabilised vitamin C, alongside fresh vegetables high in the vitamin, helps prevent deficiency.

Treats and supplements

Use fresh vegetables high in vitamin C as everyday food rather than treats: capsicum, leafy greens, and small amounts of broccoli are good choices. Fruit, such as a small slice of apple or a few berries, should stay occasional, given its sugar content. A varied vegetable selection plus fortified pellets usually supplies enough vitamin C; vitamin drops added to drinking water are not recommended, as they break down quickly and can put a guinea pig off drinking altogether. Check with a vet before adding any supplement.

With good care a Peruvian usually lives 5 to 7 years. The breed is generally hardy, but its long coat raises the stakes on cleanliness: hair soiled around the rear end can trap droppings and urine, which in warm weather can lead to flystrike, a serious condition where flies lay eggs in the coat. Daily checks and trimming cut this risk right down.

Most Peruvian health problems are the same ones seen across the guinea pig population generally.

Preventive care

• Feed unlimited hay and a vitamin C source to head off dental and scurvy problems.
• Groom and check the coat and skin daily, especially around the rear end.
• Keep bedding clean and dry, and housing well ventilated.
• Weigh weekly; steady weight loss is an early warning sign.
• Find a vet experienced with small mammals before problems come up, as not every clinic sees guinea pigs regularly.

Guinea pigs need far more floor space than a typical pet-shop cage provides, and the Peruvian is no exception. A solid floor with soft bedding protects both the feet and the long coat, which can drag and soil in a wire-floor or dirty enclosure. House at least two guinea pigs together, and scale the space up for each extra animal. Because the coat is prone to damp and heat damage, housing should sit indoors or in a well-sheltered, well-ventilated spot, particularly through a wet southern winter.

Setup checklist

• A large solid-floor cage, C&C grid setup, or sheltered run.
• A deep layer of dust-free, absorbent bedding.
• A hay rack or pile kept clean and dry.
• A water bottle and a heavy food bowl.
• One hide per guinea pig, with openings wide enough that the coat will not snag.
• Daily spot-cleaning and a full clean out each week.

Breeding guinea pigs carries real risk and should only be attempted by an experienced keeper. Sows mature sexually at around 4 to 6 weeks and boars at about 8 to 9 weeks, so the sexes must be separated early to avoid unplanned litters. A critical point with sows is timing: if a sow is bred for the first time after roughly 6 to 8 months of age, the pelvic joint may already have fused, making a natural birth dangerous or impossible. A responsible breeder plans first litters around this window.

Gestation is long for such a small rodent, around 59 to 72 days. Guinea pig pups are precocial, born fully furred with open eyes and teeth, able to move about and nibble solid food within days of birth. Litters tend to be small, with 2 to 4 pups typical.

The sow nurses the young, but pups start sampling hay and vegetables almost immediately and are usually weaned by about 3 weeks. In the Peruvian, pups are short-coated at birth and the long adult coat develops as they grow. Young intended for the show ring are assessed as the coat matures, and males should be separated from their mother and sisters well before they reach breeding age.