I had fun trying to track down a better source, but no success. The wikipedia article did have a wonderful quote from Darwin's Voyage of the Beagle that I can't resist sharing:
We saw also a couple of Zorrillos, or skunks—odious animals, which are far from uncommon. In general appearance the Zorrillo resembles a polecat, but it is rather larger, and much thicker in proportion. Conscious of its power, it roams by day about the open plain, and fears neither dog nor man. If a dog is urged to the attack, its courage is instantly checked by a few drops of the fetid oil, which brings on violent sickness and running at the nose. Whatever is once polluted by it, is for ever useless. Azara says the smell can be perceived at a league distant; more than once, when entering the harbour of Monte Video, the wind being off shore, we have perceived the odour on board the Beagle. Certain it is, that every animal most willingly makes room for the Zorrillo.
Boy, he could write! I particularly love "Conscious of its power, it roams by day about the open plain, and fears neither dog nor man."
Really lovely rhythm.
Also this History of Skunk Defensive Secretion Research is worth a look: http://chemeducator.org/sbibs/s0004002/spapers/420044ww.pdf