Should be obvious, really.

Russian circus bear kills manager [BBC News]

"An ice-skating bear with a touring Russian circus has killed a circus manager and seriously injured a trainer in the Kyrgyz capital, Bishkek... Kyrgyz police shot and killed the bear when they arrived on the scene. It is not clear what caused the attack."

Thought crossed bear's mind: "Hang on, I'm a bear--fuck this shit!"

(Congrats if you're on Facebook and have seen this twice now...)