During my years of taking care of cattle, I've taken care of a few bulls. This is the one who was most dangerous. A 2 year old Simmental bull. He sometimes loved to be cuddled and scritched, sometimes he was playful and wanted to play roughly, and sometimes... he'd get all bossy and Dominant and would try to beat the living hell out of me.
I also met him when he was 5 years old, and when he was 5, he was really calm though. :)
This is a photo of me scritching him.
Photo taken by my one of my friends, in 2009.