Stoat vs New Guinea Quoll

The dimensions of the stoat are variable, but not to the extent as the least weasel. Unusually among the Carnivora, the size of stoats tends to decrease proportionally with latitude, in contradiction to Bergmann's Rule. There is pronounced sexual dimorphism in size, with males being 1.5-2.0 times the weight of females. On average, males measure 187–325 mm in body length, while females measure 170–270 mm. The tail measures 75–120 mm in males and 65–106 mm in females. In males, the hind foot measures 40.0-48.2 mm, while in females it is 37.0-47.6 mm. The height of the ear measures 18.0-23.2 mm in males and 14.0-23.3 mm. The skulls of males measure 39.3-52.2 mm in length, while those of females measure 35.7-45.8 mm. Males weigh 258 grams, while females weigh less than 180 grams.

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The New Guinean Quoll is small, usually weighing just over 1 lb (0.45 kg). Its body is brown and the back spotted with white; the spots do not extend onto the lightly haired tail. It resembles a cat-like opossum; the quolls are also referred to as "native cats" and occasionally "marsupial cats" or "tiger cats". Its feet have transversely striated pads, which is likely to be an adaptation for grip and is indicative of a life spent in the trees. It lives throughout the forests of New Guinea at elevations up to 11,000 feet (3300 meters) but usually closer to 3,000 feet (900 meters). The population appears to be centered in the highlands of New Guinea.