Rex Guinea Pigs: Curly-Coated Companions with Big Personalities

Rex guinea pigs are a beloved breed, instantly recognisable by their dense, curly coats and their charming, teddy bear-like appearance. With their short, springy fur, broad faces, and affectionate natures, they are often described as one of the most endearing guinea pig varieties. Easy to groom and full of personality, Rex guinea pigs are a favourite for both first-time keepers and experienced enthusiasts.

In this post, we’ll cover everything you need to know about Rex guinea pigs, from their origins and traits to housing, diet, grooming, health, and suitability as pets.

What Are Rex Guinea Pigs?

The Rex guinea pig is a short-haired, curly-coated breed of Cavia porcellus. Unlike long-haired breeds such as the Peruvian or Silkie, the Rex has a short, dense coat with a woolly texture. This is caused by a genetic mutation that affects hair growth, producing hairs that are thicker, crimped, and stand upright.

Rex guinea pigs are not the same as Teddy guinea pigs, though the two are often confused. Rexes have coarse, springy coats and no guard hairs, while Teddies usually have softer, finer curls.

They are one of the most distinctive guinea pig breeds and are officially recognised in many show standards.

Key Characteristics

• Size: 20–25 cm in length, weighing 700–1,200 g (females are smaller than males)
• Lifespan: 5–7 years on average
• Temperament: Gentle, affectionate, curious, and playful
• Appearance: Short, dense, crimped coat with a woolly texture; broad face and large, droopy ears
• Colours/Patterns: Available in a wide range, including solid, bicolour, tricolour, agouti, and more

Their teddy bear-like appearance and gentle nature make them especially popular among families.

Social Needs

Rex guinea pigs are herd animals and must not be kept alone. They thrive in the company of other guinea pigs and should always be kept in pairs or groups.

Best Practices:

• Same-sex pairs or neutered pairs are safest for non-breeding homes.
• Groups of females usually get along well, while groups of males need careful introductions.
• Guinea pigs should not be housed with rabbits, as the two species have different needs.

Daily social interaction with humans also helps Rex guinea pigs build trust and stay tame.

Housing and Environment

Like all guinea pigs, Rex guinea pigs require spacious enclosures with plenty of room to move, explore, and play. Their coats require little extra accommodation, but they benefit from soft bedding to avoid irritation.

Enclosure Requirements:

• Indoor cage size: At least 120 cm x 60 cm for a pair (larger is always better).
• Outdoor hutches: Should be predator-proof, weatherproof, and paired with a secure run for grazing.
• Bedding: Fleece liners, paper-based bedding, or aspen shavings. Avoid pine and cedar, which are harmful.
• Nesting material: Hay doubles as bedding and food.
• Temperature: Keep between 18–24°C, avoiding draughts, dampness, and overheating.

Enrichment:

• Hideouts, tunnels, and chew toys.
• Daily floor time in a secure indoor or outdoor playpen.
• Supervised grazing on fresh grass in safe outdoor runs.

Cages should be spot-cleaned daily and fully cleaned weekly.

Diet and Nutrition

Rex guinea pigs require a high-fibre diet rich in vitamin C, just like all guinea pig breeds. Their woolly coats also benefit from proper nutrition.

Core Diet:

• Hay: Unlimited timothy, meadow, or orchard hay to aid digestion and wear down teeth.
• Pellets: Guinea pig pellets fortified with vitamin C.
• Vegetables: Daily servings of leafy greens and vegetables such as kale, spinach, romaine lettuce, bell peppers, and cucumber.
• Fruits: Occasional treats such as apple, strawberry, or blueberry.
• Supplements: Vitamin C may be required if diet is lacking.

Foods to Avoid:

• Iceberg lettuce (low nutritional value).
• Onions, garlic, leeks, potato, and rhubarb (toxic).
• Tomato leaves (toxic).
• Processed human food, seeds, or nuts.

Fresh, clean water must always be provided.

Grooming Needs

Rex guinea pigs are low-maintenance compared to long-haired breeds, but their coats still require some care.

Grooming Guide:

• Brushing: Once or twice a week with a soft brush to remove loose hair and keep the coat in good condition. Their fur does not matt easily.
• Bathing: Rarely necessary. Only bathe if heavily soiled, using guinea pig-safe shampoo.
• Nail trimming: Every 4–6 weeks to prevent overgrowth.
• Health checks: Regularly check skin for dryness or irritation, as Rex coats can sometimes be coarser than other breeds.

Their whiskers are also curly, adding to their unique look.

Handling and Behaviour

Rex guinea pigs are known for their affectionate, gentle personalities. They are excellent pets for families and often enjoy being handled once they trust their owners.

Handling Tips:

• Always support their body with both hands.
• Handle calmly and gently, avoiding sudden movements.
• Build trust through daily lap time and hand-feeding vegetables.
• Provide secure spaces for free-roaming play.

With patience, Rex guinea pigs become tame, cuddly companions that enjoy human interaction.

Unique Traits

• Teddy bear appearance: Short, dense, woolly coat gives them a plush look.
• Curly whiskers: A signature trait, adding to their charm.
• Low grooming needs: Short coats require minimal maintenance compared to long-haired breeds.
• Affectionate nature: Known for being especially friendly and gentle.

Health and Common Issues

Rex guinea pigs are generally hardy but share the same health risks as other guinea pig breeds.

Common Health Concerns:

• Vitamin C deficiency (scurvy): Prevent with a vitamin C-rich diet.
• Respiratory infections: Linked to damp bedding or poor ventilation.
• Dental problems: Overgrown teeth caused by lack of hay.
• Skin issues: Dryness or irritation may occur due to their coarse fur.
• Obesity: Prevent with proper diet and regular exercise.

Routine health checks and prompt veterinary care are essential.

Is a Rex Guinea Pig Right for You?

Rex guinea pigs are ideal for:

• Families with children (with supervision).
• First-time owners seeking a low-grooming but distinctive breed.
• Enthusiasts who love affectionate, teddy bear-like pets.
• Keepers who want an interactive, cuddly guinea pig.

They may not be suitable for:

• Owners seeking a long-haired, glamorous show breed.
• Homes unable to provide daily interaction, companionship, and enrichment.

Conclusion

Rex guinea pigs are charming, affectionate, and distinctive pets, admired for their woolly coats, curly whiskers, and teddy bear-like appearance. They are low-maintenance compared to long-haired breeds but still require social companionship, spacious housing, a balanced diet, and regular handling.

For families, beginners, and enthusiasts alike, the Rex guinea pig is a delightful choice, combining ease of care with a playful, loving nature.