We had a few head of cattle for milk when I was growing up. In the area we were, they did not use draft animals, farming was either all by hand, or fairly large organizations which were completely mechanized. So Dad thought that showing the local folks how to use oxen as draft animals was worthwhile. So Dad bought about 8 or so steers from a friend of ours to train as oxen. I know they were young, but they were still sort of large animals. First thing Dad did was braid up some halters, and we would work with those steers, first getting them used to the halter, then leading them around. I remember one had this wall-eyed crazy look, and it made for the most interesting training. It fought the halter, fought the leading around, and was just generally wild. Once we were leading it along an irrigation ditch, and it tried to make a break for the other side. The guy holding the lead rope let him jump, then sort of jerked at his head in mid-air. Poor cow got twisted up and landed in the ditch on his side with a great splash, but it shook him up enough that he behaved the rest of the afternoon. I remember early on, he would fight the halter till he'd fall over. Dad figured he would either learn or break his neck.
After they would lead individually, Dad made some yokes to put on their necks, then cut the back end off an old pick up truck from the scrap yard. Put a long wooden pole on it, and it was a trailer for the oxen to pull around. Put them to work just hauling this and that and got them used to working together. Dad eventually sold all of them, and a few years later remarked to me that he'd seen the wild one placidly pulling the cart around for the gentleman who bought the pair, and he was pleased with them.