Free-running bulls might be dangerous if their behaviour is not adequately
considered. Ethological observation elucidate that bulls do not tolerate if
somebody else looks after "their" cows or to be dominated, and this dispos
ition increases with age. Bulls document their attitudes by peculiar gestur
es by demonstrating social power (threatening posture, presenting the tongu
e, strong salivation, belling etc.). Overlooking these signs increases the
risk for man to be attacked. Hints are given to reduce this risk and to pre
vent severe attacks by bulls on the pasture, in free stall barns and during
handling. It is stressed that a positive relationship between man and bull
is an important contribution to facilitate the handleability of bulls.