Mustelidae or Mustelids (from Latin mustela, weasel), commonly referred to as the weasel family, is a family of carnivorous mammals. The Mustelidae is a diverse family and the largest in the order Carnivora, at least partly because it has in the past been a catch-all category for many early or poorly differentiated taxa. (From Wikipedia)

Canidae (pronounced /ˈkænɨdiː/) is the biological family of carnivorous and omnivorous mammals that includes the wolves, foxes, jackals, coyotes, and the domestic dog; a member of this family is called a canid (/ˈkeɪnɨd/). The Canidae family is divided into the "wolf-like" and "dog-like" animals of the tribe Canini and the "foxes" of the tribe Vulpini. The two species of the basal Caninae are more primitive and do not fit into either tribe. (From Wikipedia)