The Baldwin is a completely hairless guinea pig that is born fully furred and progressively loses its coat over the first 1-2 months, leaving rubbery, wrinkled skin. Its lack of fur makes it especially demanding to keep, requiring tight temperature control and extra feeding.
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Educational only. KinStation content is reviewed by licensed veterinarians but cannot replace an in-person exam. Always consult a licensed veterinarian or board-certified specialist for diagnosis, treatment, or any decision affecting your pet's health.
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From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.
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Minimum
Pair on continuous floor space
≈ 10.5 sq ft (1500 sq in) for two
Guinea pigs are herd animals — keeping just one is discouraged in many regions. The two-pig welfare floor is ~10.5 sq ft of continuous ground-level floor space; they do not use vertical levels and should not be kept in tall narrow cages. Baldwins are hairless — they need slightly warmer ambient temps (18–24 °C), extra fleece bedding, and zero drafts, but the same floor area.
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Recommended
Roomy C&C cage for a pair or trio
13+ sq ft, C&C grids
C&C (cubes-and-coroplast) grids make it easy to exceed the welfare floor. Hides at each end, a hay rack, sleeping pads, and separate eating/toilet zones cut squabbling. Add ~2 sq ft per extra pig.
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Ideal
Herd pen + daily floor time
15+ sq ft pen plus supervised floor time
Generous pen for a small herd supplemented with daily supervised floor time on washable flooring. More space dramatically reduces stress and boredom-driven behaviours (bar-chewing, dominance squabbles).
Life & growth stages
How this animal changes through its life — each stage often has its own care, diet and space needs.
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Newborn
Newborn mammals are nursed on their mother's milk. Many are born helpless — blind, deaf, and sparsely furred (altricial, as in dogs, cats, and rodents) — while others stand and follow within hours (precocial, as in hoofed livestock).
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Juvenile
After weaning, juveniles grow quickly and become increasingly active, playful, and independent. Adult coat, proportions, and (in many species) the permanent teeth come in as they approach full size.
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Adult
Adults reach full body size and sexual maturity, with the species' mature coat and build. Sexual dimorphism — differences in size, mane, horns, or markings — is pronounced in some mammals and subtle in others.
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Senior
Senior animals show aging signs such as graying fur, reduced activity, and a greater need for veterinary monitoring of joints, teeth, and organ function. Lifespan and the onset of old age vary widely by species and size.
Habitat & enclosure
House in a large solid-bottom cage (minimum 0.7 m² floor for a pair, more is better) with paper-based or fleece bedding—never cedar/pine shavings or anything dusty that irritates bare skin. Because Baldwins have no insulating coat, the room must stay a stable 20-24 °C, free of drafts and direct sun (sunburn risk). Provide hides and soft fleece to burrow into for warmth. Keep out of damp, unheated rooms.
Diet
Unlimited grass hay (timothy/orchard) for dental and gut health, a daily portion of plain grass-hay-based pellets fortified with vitamin C, and roughly a cup of fresh leafy greens (romaine, cilantro, bell pepper) for vitamin C, which cavies cannot synthesize. Hairless pigs burn more energy to stay warm, so they typically eat more than coated breeds; ensure constant access to food and clean water.
Behavior & temperament
Kept purely as affectionate companion/pet animals—they have no productive purpose. Temperament is the same as ordinary cavies: gentle, vocal (wheeking, purring), curious and timid, doing best with companionship and gentle daily handling. Warm to the touch and often described as 'living hot-water bottles.'
Health
The bare skin is high-maintenance: prone to sunburn, scratches, dry/flaky patches, fungal and bacterial skin infections, and hypothermia. The high metabolic demand and cold sensitivity make them fragile. As with all cavies, watch for vitamin C deficiency (scurvy), bumblefoot, dental malocclusion, ovarian cysts in sows and respiratory infection. Baldwin is a recessive trait; responsible breeding avoids pairing affected animals carelessly.
Tips, DIY & hacks
Keep nails trimmed and inspect skin weekly for cuts or fungus. A thin layer of fragrance-free, pet-safe moisturizer (e.g. coconut oil) can soothe dry skin—avoid over-application that clogs. Bathe only when necessary with a mild guinea-pig shampoo and dry thoroughly. Always keep at least one companion cavy and a backup heat source (snuggle pad) for cold snaps. New owners should start with a coated breed before attempting a hairless pig.