Treed

Is that a polar bear?  Or just the image color?

It is indeed a polar bear

Is it in a zoo?

i don't know really, it's just a picture i found that i figured might work along the words.

You just don't see many polar bears in trees.  Even in zoos they're around water pools and caves.  

Thought you might know the story behind it.

Luckily i could trace that pic down again, seems the tab was still open.
It's from some park or another and i now notice that i lifted the pic from Zuckerberg,  

i would imagine that polar bears run into trees in Alaska and Russia, but true, that's not a common sight.