Here's a little morsel:
One of the traits used to guage intelligence in animals is their ability/willingness to engage in playful activity.
A number of years ago, a photog from National Geo managed to capture a sequence of a group of ravens repeatedly climbing a short slope on a snow covered mountain. Once they reached the top, they would flip over on their backs and slide upside down and backward down the snowy incline only to walk back up and do it again!
I love ravens, even their belching call is music to my ears!
Revenge is a dish best served cold...
With a side plate of steaming entrails,
And a nice Bordeaux!