According to some estimates, approximately 1 in 200 men living today in historical Mongolia are descendents of Genghis Khan. Likewise, one particularly virile bear living in western Europe is the father, grandfather, or great-grandfather of every other bear born in his territory for the last two decades.
Well, humanity had a good run, but now it's over. This bear was recently spotted using a rock as a tool, the first time we've seen such behavior. It's only a matter of time before bears with rayguns show up.
Every polar bear alive today shares a common maternal ancestor, and it isn't even a bear from the same species. Their mitochondrial DNA reveals a 100,000 year story of interbreeding and hybridization...and the story is far from over.