Glengorm Castle where I trike sometimes feed highland cattle at the roadside about a mile short of the castle. I turn round if I see them at the roadside as they have large horns and even when just curious can cause damage.
Loch na Keal road also had a large herd which often wandered down the carraigeway but not seen any this year.
One thing nobody mentioned is that if a bull lowers his head and advances towards you back off but better not to run unless safety is close by.
I was told that bulls warning you off will tend to stand sidewise, as if to say "look how big I am. You don't want to mess with me" and they are right, you don't !
I recall a couple of mildly comedic, bull encounters. We were walking along a road in the West of Ireland, rather reminiscent of where Father Ted was set, and saw a huge Charolais bull in the field behind a dry stone wall. He was eyeing us up but not otherwise concerned until we came to the gate, only there wasn't a gate ! My pal moo'd at him and he responded by pawing the ground. I took this as a bad sign and we moved on PDQ and the big fella lost interest thankfully, but even with the big placid and laid back beef bulls, winding them up is not a good idea.
Another occasion also in County Clare, I was on the back of a pal's motorbike and a herd of cows were coming along towards on the single track road, which they filled. He moved to the side and I got off to guide the cows around the bike so they didn't push it over. Then I saw a bull at the back, and he seemed to be doing the eye-rolling crazy anger thing. Worked out I could hop over the wall if needs be, but nervously held my ground. Eventually the all passed by, and behind the bull at the back was a lone five year boy who was in charge of bringing them along the road. I felt a little silly being worried.
Another occasion in West Wales, I was cycling along a single track road at a good speed and there was a lone bull in the field running alongside and occasionally butting the hedge to get at me. Despite my going full tilt, with adrenalin boost, he could easily keep up, and have time to pause to bash at the hedge, which thankfully was sound