Lagidium viscacia is one of three South American rodent species commonly referred to as mountain viscachas.
In common with its two congeners, this species looks remarkably like a long-tailed rabbit. Soft dense fur covers its body, from the tips of its elongate ears to the end of its long, curled tail. The forelimbs are relatively short, while the contrastingly long and muscular hind-limbs enable it run and jump with ease.
The colour of its fur varies seasonally and with age, but generally the upperparts are grey to brown, with tints of cream and black, while the under-parts are pale yellow or tan.
Animalia - Chordata - Mammalia - Rodentia - Chinchillidae - Lagidium - L. viscacia