Bulls are always confident, because low brain mass rel. bears.  Already dimwitted, you bulls go stark-raving mad [see: Mad Cow Disease] after we grind up your buddies & feed them to you:
"A ban on feeding cattle meat and bone meal has resulted in a reduction in cases in countries where the disease was present." <==And I would have gotten away with it, too, if it wasn't for you meddling regulators

Just being around you bulls is dangerous to one's mental health:
"At the abattoir in the UK, the brain, spinal cord, trigeminal ganglia, intestines, eyes and tonsils from cattle are classified as specified risk materials, and must be disposed of appropriately."