His father replied, "Sure son, you're full blooded."

The young bear asked, "Are you positive that I'm 100% polar bear, Dad?"

"Yes, son, I'm sure. Your mother's a polar bear, I'm a polar bear..."

"But Dad, are you sure there's not a little brown bear in me?"

"Yes son, I'm sure."

"Are you really sure, Dad, that there's not just a little black bear in me?"

"Yes, son, you're all polar bear."

"Maybe just a little grizzly bear in me, Dad?"

"No way, son, no way," replied the papa bear. "Why are you asking these questions?"

The little polar bear replied, "Because, Dad, I'm freezing my tail off out here!"