Can polar bears, brown bears, or grizzlies interbreed?

The hybrid offspring are known as "pizzlies" or "grolars," and they're becoming more common as the Arctic ice melts. ... Animalia. May 23, 2016. This bear, which was three-fourths grizzly and one-fourth polar bear, can be seen at the Ulukhaktok Community Hall in Ulukhaktok, in Canada's Northwest Territories. read more

Since then, the two species have met and interbred several times, and today, brown bears (also referred to as grizzly bears) still retain some of this ancient polar bear DNA, and vice-versa. With global warming the two species are coming into contact more and grizzlies are moving north. read more

The reason grizzlies and polar bears rarely interbreed in the wild is that, generally speaking, they don't cross paths during mating season. Barren-ground grizzlies live primarily on land, where they feast on caribou and berries, and mate from May to July; meanwhile, polar bears mate from April to June while hunting for seals along the sea ice. read more