Yellowstone Park technically never closes, but most of the roads do. Beginning November 1 there are just two gates open (weather permitting) throughout the winter.
There is an abundance of wildlife in Yellowstone National Park, but this particular one doesn't belong on his own. Help bring Joaquin home to his family.
I'll admit, having someone drive me around while I gawk at all the wonder is kind of appealing. But have you checked to see just how much that will cost you?