The Adirondack’s smallest weasel is 23-31 cm (9-12 in) in length, including the short, 5.4-8.5 cm (2.1-3.3 in) tail. Ermine weigh 60-110 g (2.1-3.9 oz). Females are one-half to one-thirds the size of males. The ratio of tail length to total (combined head-body length) is the only reliable means of separating large ermine from small long-tailed [...]