The eastern quoll (Dasyurus viverrinus) is a small spotted marsupial predator that once lived across southeastern Australia and now survives mainly in Tasmania, with reintroduced populations in fenced sanctuaries on the mainland. It occurs in two natural color forms, fawn and black, both covered in white spots.

The black morph is found across Tasmania and can be locally common in some regions, although the fawn morph is generally more widespread and makes up roughly 75% of the population. The relative abundance of black and fawn morphs varies across different parts of Tasmania.

Adults are about the size of a small cat. Males reach head and body lengths of 35 to 45 centimeters (14 to 18 inches), with tails measuring 20 to 28 centimeters (8 to 11 inches), and most weigh between 1.1 and 1.3 kilograms (2.4 to 2.9 pounds). Females are smaller, typically weighing 600 to 1,030 grams (1.3 to 2.3 pounds).

One way to distinguish this species from Australia’s other quolls is by the hind feet, which have four toes instead of five. The tail is unspotted, the snout is narrow and pointed, and the upright ears give it a sharp, alert look.