draught animals

tame animals employed for draught and carriage, as oxen, horses, mules, and asses;

According to my school animals which are generally tamed are mancipable as soon as they are born;

Then do you not think that all the beasts know is how to trample on the corn as they are driven?

and that the term draught animals includes oxen, mules and horses.

Then you know this much, that draught animals are used in threshing?