It's the new McCain campaign ad, referred to in an update to an earlier post today. Unlike the pigs-and-fish ad (that seems to have become unavailable), the animal imagery here is wolves:
Remember that great old Bush ad with wolves:
Except there, the wolves were terrorists. In this new ad, the wolves are the dreaded opposition researchers.
And now seems like a good time to revisit my favorite old political animal ad, "There's a bear in the woods":
All this animal imagery suggests that politics has descended to a subhuman level. It wasn't supposed to be like this!