Is it safe to chase a bull around on a four wheeler?

Not safe. That bull you chase may well decide to turn and fight. He probably weighs more than both you and the ATV you are riding. You have no protection and if he gets mad enough he will knock you off damaging both you, the four wheeler and himself in which case you will be liable for damages. Good bulls run about $2,000 and up, got that kind of money to throw away on a few minutes of stupidity?

no obviously