I don't know if this has been discovered / reported yet..
But you can tame aurochsen / mouflons, without having to wait in between taming rounds.
For this to work you need:
At least 2 animals of the herd left alive, and preferably trapped.
1) pick the animal you are going to tame, and tame it for 20 points.
2) walk away far enough (with the now temporarily tame animal following you), to have the rest of the herd de-aggro you.
3) walk back, aggro an animal that is NOT the animal you are taming (I use call lightning for that)
Now, the animal being tamed will have re-aggro'd you, without having lost it's tameness points, and you can proceed to tame it.