Wolf that left Michigan’s Isle Royale has had amazing 2-year journey, GPS data shows

WOW !!! Imagine the country that wolf has seen !!! Incredible to survive all the highway crossings, ice crossings, and times she was near people. Apparently happy to be a loner.
 
Cool read, thanks for sharing! I'm curious, do those collars fall off when the batteries die or are they just jewelry for the animals entire life?
 
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