Fishers are swift and elegant tree-climbing furbearers.
Like the river otter, mink, skunk and pine marten, fishers are members of the Mustelid or weasel family. As with most mustelids, the fisher possesses an elongated body and has relatively short legs. About the size of house cats, adult fishers typically weigh between four and 12 pounds and measure between 30 and 47 inches from the nose to the tip of the tail. In most cases, male fishers are larger than females. In fact, males usually weigh twice as much as females.