Lighting in any render engine is a science based on art. We can, however try to have only one sun casting shadows in any given earth-based image. ;)

Ahh... Miss Nancy, do not dis the chupacabra! There is, in fact, a hybrid roaming parts of Texas created by Mexican gray wolves migrating north and finding the local coyote girls irresistable. Not a crypto, and definitely not attractive, but real. They should begin appearing in designer dog kennels very soon.

As for why it appeared... anyone heard of Rebecca Black? (over 120 million views) Attention begets attention.