I got home today with kids letting them out to play. Dogs greeted us then daughter and I began checking on pens. Son then hollered about a strange dog but gave no details. He is only three so not much expected. He said "It sleeping and not get up". I went over to see what he was talking about and saw what he was talking about. It was a smallish dog laying dead in the grass just of the porch. I did not recognize it. Size intermediate between Red Fox and Coyote (real not the wolf-hybird of the eastern U.S.). My daughter of 22 monfhs then tried to wake it up. Son asked if it was dead and what that means. Dog appears to have been killed by bites to throat and cervical dislocation with possibly bites to the abdomen. Both my dogs ran over to it as I looked body over. I think they did it. They have killed foxes, raccoons, opossums, snakes (even been bitten a Copperhead requiring vet visit), mink, and weasels but this is not something i expected to ever see. If so, they may have been primed by pitbull incursions that have resulted in outright fights to repel trespasser. Like this dog, the pitbulls have been in very good health but owner not known.