It pays to be at the right time and in the right place! Got lucky for sure
Cropped 60-70% and then multiplied x 2 using Topaz Gigapixel
How does this process work in terms of acceptable sharpness ?
I do have the whole frame with both for a better “environmental” shot
Is this a composite: No
550 mm
1/1600 sec , F/8, ISO 800
Very cute scene. At web size, sharpness looks fine to me.
Great parent/pup interaction and nature story here Karl, what a moment. Their heads couldn’t be in a better position. The thing that makes this more dynamic is the positioning of the pups left front leg. What an awesome shot 
My only suggested tweak would be to add a stronger vignette, and bring more attention to the heads of the coyotes. And reduce the highlights of the OOF twigs in the URC, although a vignette may accomplish that anyway.
It is a beautiful moment. I wonder why there is not good seperation at 550 mm, may be because of big crop?
What a moment to capture! I agree with @Ed_McGuirk concerning the pup’s leg! Overall a fine image, but I might tone down the overall brightness a bit? That can be a very subjective thing, I know. A fine behavioral image.
