It's come up on this message board before that Antarctica is the only continent, as well as being pretty much the only place, that man beasts haven't been reported from. I've always wondered if this isn't because the majority of people there tend to be well educated.
Yetis do have white fur according to 'Rage of the Yeti' (although it's described as a Yeren in the actual film), Snowbeast (both versions) and that other one whose plot includes a device far too implausible to make the film watchable, i.e that an American football team would be flying over the Himalayas, implying that they were on tour, further implying there's a call for American football outside of America.