At A Rusty Knoll we have never ventured down the road of oxen but the ability to communicate with your cows is one of the best treats of the breed. They are always watchful and good at judging your intent. They know if you are there to help, feed or give treats and then the line is endless. If they think you are there to load someone in a trailer or separate the herd they can be very evasive.
Here is a video on Devon Oxen. Enjoy it and realize these animals will go the extra mile for you. You can only get out of them what you put into them.