Here's an interesting piece about animal personalities: http://scienceblog.com/67560/animal-...first-thought/
This line grabbed my attention:
“We believe that unpredictability might represent a form of behavioural flexibility that facilitates learning, or makes animals unpredictable to predators or competitors. Some have even referred to this phenomenon as representing ‘free will’ in animals".
... or is that apparent free will that the animals were destined to manifest from the moment they were born?