The other morning I walked out to see a moon dog. I of course didn't know it was called that. I said, "Hey Mike, check out this really cool ring around the moon." He looked and informed me it was a moon dog.
From the web:
A moon dog, moondog, or mock moon, (scientific name paraselene, plural paraselenae, i.e. "beside the moon") is a relatively rare bright circular spot on a lunar halo caused by the refraction of moonlight by hexagonal-plate-shaped ice crystals in cirrus or cirrostratus clouds. Moondogs appear 22° to the left and right of the moon. They are exactly analogous to sun dogs,
but are rarer because to be produced the moon must be bright and
therefore full or nearly full. Moondogs show little color to the unaided
eye because their light is not bright enough to activate the cone cells of humans' eyes.
Turns out there are also sun dogs (which I've seen before as well).
Just thought that for a Wednesday we should all learn a little something.
Moon Dog also sounds like a yoga pose.