Timber Wolf

I'm never sure whether to call this beautiful animal a Timber Wolf or an Arctic Wolf. She is in a large enclosure with two grey Timber Wolves and I can only see one sign, which says Timber Wolf. So, I suspect she, too, is a Timber Wolf, just white. The colour of Timber Wolves does range from nearly white to nearly black, but they are usually grayish. Taken at the Calgary Zoo on March 2nd. I've never seen a Wolf in the wild, but I would love to.

Thanks, Art (LeapFrog!) for the following link that explains the difference between the Wolf subspecies!

answers.yahoo.com/question/index?qid=20090317055435AAVR34l