The Silkie — called the Sheltie in the UK — is a long-haired breed whose coat sweeps back from the face (no forehead rosette), giving a smooth, teardrop 'mane' silhouette. Developed by crossing Peruvians with self-coated cavies, it is gentle but, like all long-coats, demanding to groom.
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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
Single guinea pig floor space
≈ 7.5 sq ft (1080 sq in)
Continuous ground-level floor — guinea pigs do not use vertical levels and should not be kept in tall narrow cages. They are herd animals: keeping just one is discouraged in many regions. Silkie (Sheltie) has long, smooth, swept-back hair — same welfare floor, plus regular grooming to prevent mats.
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Recommended
Pair of guinea pigs
≈ 10.5 sq ft (1500 sq in)
C&C (cubes-and-coroplast) grids make it easy to reach this. Add hides at each end, a hay rack, and separate eating/toilet zones to reduce squabbling.
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Ideal
Herd with extra roaming
13+ sq ft plus daily floor time
Generous pen for a small herd, supplemented with supervised floor time on a washable surface. More space dramatically reduces stress and boredom-related behaviours.
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.
Color & pattern variants
Natural variants occur in the wild; selectively bred (man-made) variants were developed in captivity.
Keep socially in same-sex pairs or groups in a large solid-floored cage or C&C habitat with clean, low-dust bedding (fleece is common) to keep the long coat tidy. Provide multiple hides, a hay rack and daily floor-time, indoors and draught-free at 17-24°C. Frequent spot-cleaning and bedding changes protect the trailing coat from soiling.
Diet
Base the diet on unlimited grass hay for dental wear and gut health, with daily vitamin-C-fortified pellets and a cup of vitamin-C-rich vegetables; supplemental vitamin C is required. Ensure hay and food remain accessible past the long coat and provide constant fresh water. Change foods gradually.
Behavior & temperament
A show and companion breed, Silkies are typically calm, docile and a little shy — often considered the most laid-back of the long-haired cavies — and bond well with cage-mates and gentle handlers. Because the coat sweeps backward rather than over the eyes, they see better than Peruvians. Kept for exhibition and as ornamental pets.
Health
All standard guinea-pig risks apply (scurvy, dental malocclusion, respiratory and skin infections, pododermatitis, ovarian cysts, heatstroke, obesity). The long rear coat is prone to matting, urine/faecal soiling and flystrike, and traps debris that can cause skin disease and mites. Avoid breeding roan×roan or dalmatian×dalmatian to prevent lethal-white offspring.
Tips, DIY & hacks
Brush daily and keep the hindquarter coat trimmed and clean to prevent flystrike; most pet owners keep Silkies in a practical short trim, reserving full coats for show animals. Check skin and weigh weekly. The backward-sweeping coat makes them slightly easier to keep clean around the face than Peruvians, but they remain a high-commitment breed unsuited to beginners or young children.