The great Mental Floss blog actually did the research on something that occurred to me as soon as Steve said "Snow Leopard" during the keynote -- naming an OS after a cat "sometimes known as the ounce" might not be the best idea.
File this stuff in the "didja know" column: snow leopards aren't actually leopards -- they're actually closer in family to cheetahs, which means that the new OS might be a little closer to Aqua than we're all comfortable with. Also, they're pretty timid -- not only can they not roar (so new audio features in the OS are out), they're known to hide behind their fuzzy tails. We'll put it this way: you wouldn't exactly want to call your football team The Snow Leopards, so we're not quite sure why Steve decided to use the moniker.
Finally, the weirdest tie here is that the snow leopard as a symbol is already taken -- by the Girl Scouts of Kyrgyzstan. Of course, Steve's naming capabilities haven't really been up to snuff lately, and maybe he just didn't want to go with Cougar -- even though Apple owns it, they may not have been ready to take on all the connotations associated with that particular nomenclature. Then again, maybe this will be good for the snow leopard's image -- after seeing all these pictures of cool cats, if you feel you'd like to help them out, we're sure the Snow Leopard Trust would be happy to hear from you.