From USA Today:

DETROIT — Isle Royale may be down to a lone wolf, as the federal government ponders whether it will replenish the pack on the northern Michigan Island.

For the last two years, a male and female wolf have held on as the last remaining pair of wolves on the 893-square-mile island national park in Lake Superior. The pair were spotted in the summer of 2016, on the motion-triggered trail camera of Michigan Technological University wolf researcher Rolf Peterson, and again in Michigan Tech’s annual winter survey of the island last January. 

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