Roy, those cows have different personalities just as humans do. I was 5 years old when my Dad bought a Jersey milk cow named Popeye. A very gentle cow . . except . . she wanted to fight my mother and mother was scared of her. Dad talked to the previous owner and the only thing they could figure out was that the cow had never seen a woman in a dress, and in those days, my mother did not own or wear slacks. Dad was gone overnight on his job one night a week, so that night, and the next morning, I'd take Popeye into the barn, put out her feed, then stand there and pet her where she couldn't turn her head and see, then mother would come in, sit down, milk her, and get up and leave. I could put a rope on her horns and lead her anywhere. Then when I was in the first grade of school, Popeye got out of the pasture and was grazing along the highway one day. Mother and her best friend (also in a dress) went to try to drive her up to the house, but Popeye chased them through the fence. When I got home from school, I went and put a rope on her horns and led her home.
So Dad got her bred to a Jersey bull, got lucky and got a heifer that we named Sweetpea, and when she was old enough to have a calf and we started milking her, Dad sold Popeye and mother couldn't have been happier. Of course Sweetpea was a family pet from the time she was born, and yes she'd not only come when called, but would come to be petted and follow us around if we went into the pasture.