ModernPrimitive

I've been reading lately about the coyotes here in the east as their numbers locally seem to be increasing.
Though I don't have any links at my fingertips, IIRC in a nutshell:
at one point eastern coyotes were all but gone same as wolves; biologists have matched wolf dna in coyotes now present in the east.
The theory is that western coyotes have returned east via Canada interbreeding w/ wolf populations along the way.
In this manner, both the wolf & coyote have resumed their former home-range in one animal. I believe the NY state wildlife biologist noted these studies when explaining the size and coloring of NY coyotes.
As for coydogs, I remember reading that genetically it is not viable for some reason; I believe it had to do w/the relative hybrid state of domestic dogs.