Not quite the scenario you described earlier Gnome:
"GnomeDotter #1 became enamoured of a very pretty young bullock in a field of about half a dozen others and managed to entice him over to have his snout rubbed" - Farm livestock is not supposed to be played with. Up until YOUR daughter started "enticing" there was no danger.
"In the meanwhile 2 of the others decided to investigate this either out of interest or because of perceived threat." - DUH?? Cattle are herd animals, what the hell did you think they were going to do?
"I knew from experience that becoming very large and moving quickly puts cattle off so I waved both arms in the air and made a noise which seemed to avert them from their intention." - Knew from experience eh? Pity you hadn't used that vast experience and knowledge of livestock earlier. But as I said the mental image is amusing. Were you wearing your sandals, shorts and Hawaiian shirt?
"Now, it doesn't matter what the bullocks intentions were but as they weigh a lot more than even me it could have been quite a catastrophic encounter had one of them collided with a slightly built human! - but it would have been entirely the fault of the slightly built human in the first place if what you have described is the truth.
"Moral of the story? Well, just be careful out there I suppose." - That and don't act like a prat.
"the farmer who has the right to graze his animals but also has the obligation to keep the right of way clear and free from danger."
Of course he has the right to graze his animals, it is after all HIS land. He IS obliged to maintain the right of way and keep it open - Where did you get the bit about keeping it free from danger from? Danger of what? Danger from what? Please tell us Gnome how on earth he can possibly or practically do that?