This year’s winter study on the wolves and moose of Isle Royale is out today.
It says it appears there are only two wolves left – down from three last year, and a high of 50 in the 1980s.
Rolf Peterson is a research professor at Michigan Tech University. He says these last two wolves are closely related.
“They’re father and daughter and they’re also half-siblings, because they share the same mother," he says.