'Mustelidae' refers to which family of animals?

A weasel is a mammal of the genus 'Mustela' of the family 'Mustelidae'. The genus 'Mustela' includes the least weasels, polecats, stoats, ferrets and mink. Members of this genus are small, active predators, with long and slender bodies and short legs. The family 'Mustelidae', or 'mustelids', (which also includes badgers, otters, and wolverines) is often referred to as the 'weasel family'. In the UK, the term 'weasel' usually refers to the smallest species, the least weasel.

Weasels vary in length from 173 to 217 mm (6.8 to 8.5 in), females being smaller than the males, and usually have red or brown upper coats and white bellies; some populations of some species moult to a wholly white coat in winter. They have long, slender bodies, which enable them to follow their prey into burrows. Their tails may be from 34 to 52 mm (1.3 to 2.0 in) long.

Weasels feed on small mammals and have from time to time been considered vermin because some species took poultry from farms or rabbits from commercial warrens. They do, on the other hand, eat large numbers of rodents. They can be found all across the world except for Australia, Antarctica, and the neighbouring islands.