Strange the things that just might offend the sensibilities. . . [added: obviously not the monks, given the margin illustrations in some of the Medieval texts.]
We have hosted both cattle and goats, but the only ones that i actually noted farting were the cattle. Perhaps the goats were more coy about it.
As an aside, cattle can walk, avoid objects in their path, chew, pee and poop all at the same time.
I also remember singing this song in junior (?elementary) school. Plain English, and the sanitised version.