Study on Bonded Goats

[Nanno]

Cows bond as well, I would say. But as they are also being used less and less as working partners nobody notices.

There's a very interesting blog (German) about a young lady and her oxen who wandered through Germany for several years. She described very detailled the bond between her and the oxen.

That's a very good point! I didn't think about the fact that cattle have been used alongside man for perhaps even longer than horses as a means of hauling and transportation, plowing, and other heavy work. 

Even sheep, though they are primarily a fiber and meat source, rely on humans to guard and protect them. Sheep are very helpless creatures in the wild, so I imagine that thousands of years of relying on human protection would cause them to gaze at a person when needing help.