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Cavia porcellus
Guinea pig covered in short, dense curly fur. Similar to Teddy but with coarser texture. Sturdy build with a calm temperament.
The Rex guinea pig is characterized by its short, coarse, upright coat (approximately 1.5–2 cm in length), produced by a genetic mutation causing the hair shafts to grow without the normal downward curl. The coat has a rougher, more bristly texture compared to the Teddy guinea pig, though both are short-haired rex-type breeds. Rex guinea pigs are generally docile, sociable, and easy to handle, making them suitable for families and owners of varying experience levels. Coat maintenance is relatively low-effort compared to long-haired breeds, though regular nail trimming is important as nails tend to grow quickly. Diet consists of unlimited timothy hay, appropriate pellets, and daily vitamin C supplementation. Common health concerns include scurvy, urolithiasis, and respiratory infections.
The Rex Guinea Pig lives 5-7 years.
Lifespan is 5–7 years.
The Rex Guinea Pig grows to 20-30cm / 800-1300g.
Adults measure 20–30 cm and weigh 800–1,300 g.
Origin
Andes region of South America
Lifespan
5-7 years
Size
20-30cm / 800-1300g
Temperature
18〜26℃
Humidity
Sources: RWAF Guinea Pig companionship
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Primary sources
Accepted name: Cavia porcellus Linnaeus, 1758
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
40〜60%
Timothy hay (staple), pellets, vitamin C-rich vegetables
Short curly coat, relatively easy care. Slightly coarser than Teddy
Calm and friendly. Relatively tolerant of being held
Sturdy, muscular build. Robust and healthy breed
Watch for bumblefoot. Use soft bedding material
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The average lifespan of Rex Guinea Pig is 5-7 years. With proper care and nutrition, they can live a long and healthy life.
Rex Guinea Pig typically reaches 20-30cm / 800-1300g as an adult. Size may vary depending on care conditions and individual genetics.
Rex Guinea Pig feeds on: Timothy hay (staple), pellets, vitamin C-rich vegetables. Aim for a balanced diet with appropriate feeding frequency.
The price of Rex Guinea Pig varies significantly depending on variety, age, sex, and the individual animal's condition. Check our market price page for the latest pricing information.
Last updated: June 24, 2026