We have yotes, but I trap them too... We've had a black bear cruising the lawn at night, dicking with our garbage... Time to buy a bigger trap...
Regarding your coon... Was it near a road? Maybe it was a vehicle, lol... If a coyote killed it, it would have eaten it, if a bobcat killed it, it would have attempted to cover it with grass/weeds... I would be willing to bet it was a domestic k9... Or rabies just forced it to check out