I take my dogs out each night in San Diego business parks and they are natural hunters. Mainly rats. They've killed hundreds, if not thousands of them.
During our walks over the last five years we've had two incidents with coyotes, both just after the fires when the coyotes came out of the canyons more frequently.
The first incident, the coyotes sent a female coyotes up out of the canyon three times, trying to lure the dogs "boys" to chase after it. On the 3rd time, the least smart dog (liberal) fell for it. By the time the other dog and I got down into the canyon to rescue him he was getting whooped pretty good by several coyotes of various sizes.
The second incident, we rounded the corner of a building, and there were six coyotes chewing on something. The same least smart dog, charged into the middle of them and grabbed the first one by the neck. The two smaller, and two middle size coyotes, headed across the parking lot and ducked into the canyon. The two large coyotes stayed and fought. Both my dogs weigh right at 60 pounds each and both of the two coyotes that stayed and fought looked very much like German Shepards and I would say outweighed my dogs by 10 to 20 pounds each. When I got there with the other dog the two larger coyotes both retreated into the canyon.
What was weird about this one was that it was pretty close to our house and for the next couple weeks there were coyotes milling around the house and even standing under the street light out in front of the house. It was sort of like a Jaws revenge movie.
There have been lots of other nights where they have tracked us and I generally plot our route each night where we go by motion detector lights and then we can look behind us to see if the lights come on so we can tell if we're being tracked. On at least two or three occasions while out hunting with the boys you can just tell things aren't right. Things feel different. You'll think you saw something to the side or heard something behind you. The dogs will close in on me and not venture very far away. On those nights we'll get in the car and go to a different park.
Yes, they do that. I'll go out to see what the dog is carrying on about and see a coyote sitting or standing 50 yards away, if you wait long enough you'll see they're never alone. I've never had one be aggressive here, but I don't have any livestock either. Mostly I think they come around just to pi$$ off the dog......or to party with him, I don't know which.