"What's
a Yak????"
Okay,
good, this is a good place to start. A yak, most simply, is a hairy cow-like
animal. It's a mammal, and... well, they're hairy... no, this isn't working.
Not at all. I think in this particuar case, a visual demonstration would
work better...
All
of the Following are NOT YAKS!
CAT
DOG
ALIEN
THESE are yaks!!! (See, I told
you they were hairy!!!)