American Mink
Neovison vison

f4 @ 1/5000s, ISO:400, Nikon D3S w 500mm

"American Mink," Wikipedia, the free encyclopedia. The American mink is a semiaquatic species of mustelid native to North America, though human intervention has expanded its range to many parts of Europe and South America.The American mink differs from members of the genus Mustela (stoats and weasels) by its larger size and stouter form, which closely approach those of martens. It shares with martens a uniformly enlarged, bushy and somewhat tapering tail, rather than a slender, cylindrical tail with an enlarged bushy tip, as is the case in stoats. The American mink is similar in build to the European mink, but the tail is longer (constituting 3851% of its body length). The American mink has a long body, which allows the species to enter the burrows of prey. Its streamlined shape helps it to reduce water resistance whilst swimming.
Bourne, Massachusetts