We did the same thing - stopped by, cursed and carried on - under similar circumstances two years back. When we found, in front of our complex, a mortally wounded cow .The scene then was that of the cow, foaming from the mouth, and gasping for breath. The dying animal was being watched over by some panchayat sweepers.
our earlier post (May, 2011), in which I wrote: Padur municipal sweepers squatting by the side of the dying cow ...said they were waiting for the cow owner to turn up to claim the animal. As for the dying animal, they pleaded helplessness. There was nothing they could do, they said, other than wait for the death.
A two-minute YouTube clip that I took, of unfettered movement of cattle at Padur.