Fishers, Fierce Predators, Make a Home in the Suburbs - NYTimes.com: "Sinewy, with bushy tails and beady eyes, fishers weigh 5 to 15 pounds and live on land and in trees. They are mainly carnivorous, typically eating squirrels, mice, voles and other small animals, as well as nuts and seeds. Fishers are also one of the porcupine’s few enemies, killing it by attacking its snout and flipping it on its back.

“Fishers are pretty vicious,” said Michelle Johnson, the animal control officer in West Greenwich.

The fisher belongs to the mustelid family, which includes weasels, otters and wolverines. It has the aggressive, carnivorous temperament of a wolverine and can climb trees like a marten. Like weasels, a fisher will kill multiple animals at a time in a confined space. Fishers are nocturnal and not easily spotted."
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These things are nasty. They can drive a bear away from his dinner. On top of the mortgage meltdown, this is obviously one of the last signs of the Apocalypse.