Haig's tuco-tuco is a small burrowing rodent with soft gray-brown fur. It lives in burrows and gives short calls both day and night.
Head-and-body length is 155–165 mm, the tail is about 70 mm, and average mass is about 164 g. Its fur is soft and silky, with an agouti gray-brown color.
It lives in burrows and comes above ground only briefly. The account describes a short 'tuc-tuc' call repeated as often as 30 times a second, both by day and at night.
An extinction-risk assessment has not been added yet.