Like a liger a Polar bear Grizzly cross would be cool

Like the Liger "It's pretty much my favorite animal" ND "bred for its skills in magic" LOL, A Polar bear, Grizzly bear cross has been found in the wild as reported here . Polar bears are the largest bears around, now imagine it with a Grizzly paw and if it's anything like a liger which suffer from gigantism, that would be so cool. On the other hand this could endanger Grizzly and Polar species which is not so cool.