Guinea pigs come in a surprisingly wide range of breeds, distinguished mainly by their coat type: short, long, curly, crested, or completely hairless. The American Cavy Breeders Association (ACBA) officially recognizes 13 breeds, but you’ll encounter additional varieties popular with breeders and pet owners that haven’t yet earned formal recognition. Here’s a breakdown of the main types and what makes each one unique.
Short-Haired Breeds
The American guinea pig is the most common breed you’ll find in pet stores and rescues. It has a short, smooth coat that lies flat against the body, making it one of the lowest-maintenance options for grooming. A weekly brushing is all it needs. Americans come in virtually every color and pattern, and their easygoing temperament makes them a popular first pet.
The Teddy guinea pig looks quite different despite also being short-haired. Its coat is dense and springy, standing upright to give it a plush, stuffed-animal appearance. That texture means the coat can trap debris more easily than an American’s sleek fur, so Teddies benefit from slightly more frequent brushing.
The Abyssinian and Its Rosettes
Abyssinians are instantly recognizable. Their coat grows in circular whorls called rosettes, creating a wild, bedhead look that no amount of grooming will tame. A show-quality Abyssinian has eight to ten well-defined, symmetrical rosettes with crisp ridges forming straight lines between them. These rosettes are positioned in specific places: one on each shoulder, one on each hip, two on the rump, and four spanning the saddle and sides.
Because the hair grows in multiple directions at once, the coat stays naturally rough and textured. Abyssinians don’t need the intensive grooming of long-haired breeds, but their coats do benefit from regular brushing to prevent tangles where the rosette ridges meet.
Long-Haired Breeds
Long-haired guinea pigs are the showstoppers of the cavy world, but they come with a real time commitment. All of them need daily brushing with a wide-toothed comb or small slicker brush, with extra attention to the hindquarters and belly where mats form fastest.
The Peruvian has the most dramatic coat of any breed. Its smooth, straight fur can grow up to two feet long and parts down the middle, flowing forward over the face and backward over the rump. Two rosettes, one on the head and one over the rump, cause the hair to change direction, which is what sends that curtain of fur cascading over the eyes. Many pet owners give their Peruvians a trim to keep the hair manageable and let the pig actually see where it’s going.
The Silkie (also called the Sheltie) looks similar at first glance but has one key difference: its hair only grows backward, swept away from the face like a mane. There are no rosettes disrupting the flow, so the coat has a sleek, teardrop shape. The texture is noticeably soft and glossy.
The Coronet combines the Silkie’s backward-flowing long hair with a single rosette (or crest) centered on the forehead, giving it a little crown effect. It’s essentially a crested Silkie.
Curly-Coated Breeds
The Texel is the only ACBA-recognized breed with a long, curly coat. Its hair forms corkscrew ringlets and tight curls across the body, while the hair on its head stays short and kinky. The undercoat tends to be curlier than the outer guard hairs, but both should show definite curl.
Grooming a Texel is a different process than caring for other long-haired breeds. You should never brush or blow-dry a Texel’s coat, as both will destroy the curl pattern. Instead, the routine involves finger-combing through the ringlets twice a day to find and gently work out knots, which tend to start around the hind legs. A daily misting with plain water helps the curls spring back into shape. Texels also shouldn’t be housed on wood shavings, since even a single shaving can get caught in those curls and start a serious tangle. Keeping toenails trimmed short is important too, because long nails snag in the coat.
The Lunkarya is a rarer curly breed not yet recognized by the ACBA but well known among breeders, particularly in Europe. Its coat forms dense corkscrew ringlets from base to tip across the entire body. The British Cavy Council describes this corkscrew effect as the breed’s most important feature. The Lunkarya’s coat is coarser and wilder-looking than the Texel’s, with a fuller, more untamed appearance.
Crested Varieties
Crested guinea pigs have a single rosette on the forehead, sitting like a little beret. The rest of their coat is short and smooth, identical to an American. The distinction between crested types comes down to color. The American Crested (sometimes called the White Crested) has a crest that contrasts with its body color, most commonly a white rosette on a solid-colored body. The Self Crested has a crest that matches its body color exactly, making it subtler and harder to spot at a glance.
Only the White Crested currently holds ACBA recognition. Care requirements are the same as any short-haired breed: weekly brushing and standard upkeep.
Hairless Breeds
Two hairless breeds exist, and while they look almost identical as adults, they arrive in the world very differently. Skinny pigs are born nearly hairless, sometimes with patches of fuzz on the muzzle, feet, or legs. They were originally developed by crossing a hairless laboratory strain with haired guinea pigs. Baldwin guinea pigs, on the other hand, are born with a full coat that sheds completely within the first few weeks of life, leaving them totally bald.
Both types carry a recessive gene, meaning a guinea pig needs two copies of the gene to be hairless. Neither breed is ACBA-recognized, but both have dedicated fan bases among pet owners.
Without fur, these guinea pigs need a warmer environment than their haired relatives. Research on hairless guinea pigs found they consistently prefer temperatures around 86°F (30°C), and housing rooms for hairless strains are typically kept at a minimum of about 75°F (24°C). Their exposed skin is also more vulnerable to sunburn, scratches, and dryness, so they need soft bedding (fleece liners work well) and protection from drafts and direct sunlight.
The Satin Coat Variation
Satin isn’t a breed on its own but a coat modifier that can appear in several breeds. The ACBA recognizes Satin versions of the American, Abyssinian, Peruvian, Silkie, and Teddy. Satin-coated guinea pigs have a hollow hair shaft that reflects light, giving the fur an unmistakable glassy sheen. The effect is striking, almost like the coat has been polished.
However, Satin guinea pigs carry a serious health risk. They are significantly more prone to a condition called fibrous osteodystrophy, commonly known as Satin Syndrome. The condition involves overactive parathyroid glands pulling calcium out of the bones and teeth, leaving them fragile and flexible. Affected guinea pigs become lethargic, lose interest in eating, and start favoring softer foods because chewing becomes painful. X-rays reveal decreased bone density and joint swelling. While a healthy guinea pig typically lives about five years, guinea pigs with advanced Satin Syndrome are often euthanized younger due to pain and declining quality of life. Some breeders and rescue organizations actively discourage breeding Satin varieties for this reason.
Does Breed Affect Lifespan or Size?
Most guinea pig breeds fall within the same general size range of roughly 8 to 12 inches and 1.5 to 2.5 pounds, with individual variation mattering more than breed. A large-scale survival analysis of pet guinea pigs in Britain found no significant differences in longevity between breeds, sexes, or neutering status. The researchers also noted that breed identification among owners and veterinarians is inconsistent, which makes breed-specific health claims difficult to verify. In practical terms, the breed you choose affects your grooming workload and housing setup far more than it affects how long your guinea pig will live, with the notable exception of Satin varieties and their bone disease risk.
If you’re choosing a guinea pig primarily as a pet rather than for showing, coat type is the most useful way to narrow your options. Short-haired and crested breeds need minimal grooming. Long-haired and curly breeds reward dedicated owners with stunning coats but require daily care. Hairless breeds need extra warmth and skin protection. Matching the breed to the time you can realistically spend on grooming is the single most practical decision you’ll make.