Head to head
Short-tailed Chinchilla vs Mountain Vizcacha
Both are chinchilla-family rodents adapted to the cold, thin air of the high Andes, but their conservation fortunes could hardly be more different.
| Short-tailed Chinchilla | Mountain Vizcacha | |
|---|---|---|
| Scientific name | Chinchilla chinchilla | Lagidium viscacia |
| Conservation status | Critically Endangered | Least Concern |
| Body shape | Compact, dense-furred rodent body | Rabbit-like body with a long, bushy tail |
| Population trend | Decreasing, a few remote colonies left | Stable and widespread |
| Cold-weather strategy | Extraordinarily dense insulating fur | Basking on sun-warmed rocks |
| Range | A few remote sites in northern Chile | High Andes of Peru, Bolivia, Chile, Argentina |
| Social structure | Colonial, sheltering in rock crevices | Colonial, sheltering in rock crevices |
| Diet | Grasses, seeds, sparse vegetation | Grasses, mosses, low-growing vegetation |
Short-tailed Chinchilla vs Mountain Vizcacha: common questions
How closely related are the short-tailed chinchilla and the mountain vizcacha?
Both belong to the same broader chinchilla-family group of South American rodents adapted to cold, high-altitude conditions, though the mountain vizcacha is a more distant relative with a distinctly different, rabbit-like body shape.
Why is the short-tailed chinchilla so much more endangered than the mountain vizcacha?
Intensive historic hunting for its extraordinarily dense fur collapsed the short-tailed chinchilla's population across nearly its entire range, while the mountain vizcacha was never targeted by the fur trade to the same extent and has remained widespread.
Do both animals survive the cold the same way?
Not quite. The short-tailed chinchilla relies mainly on its extremely dense fur for insulation, while the mountain vizcacha combines a dense coat with long periods basking on sun-warmed rocks to conserve energy.