I have to say I have never really given much thought to Yaks. In my mind they were always just furry cows - we don't see a lot of Yaks in the wild around here.Today, thanks to the boy, I doubled my knowledge of them.
Recently the boy has gotten into playing Go Fish - he really loves it, and is pretty good at it, he actually beats me quite often. We have an animal Go Fish game, and to tweak it a bit, we added our own rule that when you make a match, you need to make the sound of the animal. Today the boy matched his Yaks, but didn't know what noise they made, so thanks to the trusty internet, we searched and found out - they grunt. The boy loved it so much that he continued to pretend to be a Yak for the rest of the morning, going around grunting all the time.
So if you're intrigued, here's the link to the clip we watched to help learn about the noise of a Yak. It's never a dull (or quiet) moment around here!