People are calling the polar bear pet the "cutest thing in-game." The reaction of "Awwww!!!" can be heard throughout guild chats everywhere. And for those special/cool/nerdy enough, you can even have a polar bear non-combat pet next to a polar bear hunter pet next to a BlizzCon polar bear mount next to a regular polar bear mount.
If you get to have that much polar bear love in one screenshot, you get the achievement "Threat Down: Polar Bears" and are awarded the title "Colbert." The t is silent, of course.
Okay... maybe we're kidding about the title, but it's still cool to be able to do that.