It's also on the High Woods Stringband Feed Your Babies Onions CD. I forget all the verses they have on it, though.

Cow and sheep walking through a pasture,
Cow says, "Sheep, can't you walk a little faster?"
Baaaa!

Sheep says, "Cow, I got a sore toe,"
Cow says, "Sheep, I did not know."
Baaaa!

Me and [?] went a-hunting,
Bang! went the gun and down went the mutton,
Baaaa!

I can't stand meal, I can't stand mutton,
I don't give a damn for Old Jimmy Sutton,
If you can't sing that, you can't sing nothin'
Baaaaa!
[last sung verse has an extra line]