Just discovered Animal Planet's The Uprising, narrated by Richard Belzer, about animals becoming aggressive and more prevelant in human habitats. Interesting that this realm of animal behavior -- aggressiveness, increased presence, odd behaviors, etc. -- in "human terrority" has become the focus for a two hour program. It's not surprising Belzer would be the host; he's been a long time fan of the esoteric, as his book UFOs, JFK, and Elvis: Conspiracies You Don't Have to be Crazy to Believe shows. (Specifically, I'm watching the segment on coyotes in Chicago.)
Related to this theme of animals "going mad," becoming more aggressive, plentiful, and behaving in anomalous ways is Arthur Machen's story The Terror, George Orwell's Animal Farm; and many more examples can be found. Those were written long ago; before stories of anomalous animal behavior became part of the daily news stream of course, but we can see once again an example of art as a predictor, or mirror, reflecting realities.
I've been fascinated by stories of strange animal behavior for fifteen years or so, collecting newspaper articles, etc. not sure why I was doing so, just sensing that it was important.