Wolf count down, moose hold steady in latest results from 52-year study at Isle Royale NP

Gray wolf numbers are down at Isle Royale National Park as two of four packs disappeared over the past year. But scientists say the remaining wolves are in good shape.

Biologists Rolf Peterson and John Vucetich of Michigan Tech University have released their annual report on wolves and moose at the Lake Superior park.

Scientists have studied interactions between the two species there for 52 years.

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