A place for people to share results of pulls: https://www.facebook.com/groups/Oxpullresults/
Group focused on oxen at the fair.
If you’re using the broader definition of “oxen” you might find info about draft sheep and goats here, as well as some cow/steer riding. Not a very active group, but a wide array of species in the content.
Primarily focused on Positive Reinforcement training methods and riding.
AllThingsOxen Facebook Group
An all-inclusive oxen group for discussion of training, equipment, showing, etc…