Even if a bull or cow is fed by you, loved by you and always around you, doesn't mean that it's animal instinct won't kick in a some point and consider you a threat for no reason.
I've seen many a playful cow or bull in my life. I have never seen one that got as sad as this one when he accidentally popped the ball he was playing with.
Bulls are always out in pastures and away from civilization, right? Well, a bull in Waco this week got loose and ending up walking on city streets and got into someone's backyard.
How did they catch him?