When will writers stop using words improperly?

Words like “ïnexplicably” applied to animal behavior is just wrong.  Why do writers persist in humanizing animal behavior.  “Unexpectedly” would seem to be a better word.

Staten Island’s famous groundhog, Charles G. Hogg, inexplicably bit Mayor Michael Bloomberg during his annual holiday ceremony on Monday, drawing blood from the billionaire.  (as reported on 1010 WINS and written by SI Advanced)

I feel sad for my children, they have to grow old with mediocre and deteriorating journalism.  Although, take note, THEY all know the difference.