We have lots of cute little bunnies, ducks, racoons and deer around - so yes, huge food supply. We have so many coyotes in a very suburban setting - we are right in the middle of a city of +700,000 people.
I checked him over and didn't see any bites and called the vet - they said if no bites, not to worry. His shots are up to date so the concern is more for infection than anything else. My dog is normally so calm and we laugh at him for being the worst guard dog ever - he rarely barks. My black lab barked more at strangers. I couldn't believe it when I saw him, but am so glad we worked so hard on obedience training. I am sure there were more waiting in the wings so to speak.