Actually, if you look at the skeleton of the Coyote, or other canine for that matter, your better shot placement is to run a mental image line from the head to the shoulder and the paw up from a vertical position and put your round in the area where the two lines intersect...
The heart is located between the lungs and what would appear to be a shoulder shot is not...Most other hits will result in a run off, most of the time...You only have about two inches in diameter for a DRT..
