![](https://i.cbc.ca/1.7239863.1718820252!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_620/hybrid-bear.jpg)
A recently-published study examined samples from more than 800 polar bears and grizzlies in Canada, Alaska and Greenland. To researchers’ surprise, a family of bears in the N.W.T. were the only hybrids detected — meaning hybridization is rare. But it is expected to happen more often.