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The only time I've seen one chase a deer was a small yearling. I was ice fishing on my lake and heard something coming from shore. The deer runs out onto the ice and comes straight for me, I thought she was going to run me over, but she ran about 10' from me and kept going, about 100' behind her a coyote comes out of the woods. It looked pretty tired and trotted probably to within 50' of me and then I started towards it and yelled and it ran back into the woods. The deer didn't seem too tired and kept on going up on the hill where it started browsing again. I think it was using me as a defense knowing the coyote wouldn't come by me. I've seen them huddle close to the house at night too when I hear coyotes howling in the woods, but that could just be coincidence. I guess in my case I'm happy its a stable population and scared of people and I'll just keep a close eye on my pets and chase them off if I see them.
I don't know how many coyotes we have in our area but I hear them from time to time and we saw one very close to the house on morning. This thread has me thinking about getting a new game camera and seeing what it sees.
I have heard a pack of dogs chasing deer and the deer always won. The deer was just playing with the dogs. The deer would run, stop, take a break, wait for the dogs to catch up and repeat until the dogs gave up. I think a healthy deer would do the same most of the time for coyotes. Now if the adult deer was ambushed or trapped, then the coyote might win one.
The danged forest rats, aka deer, ate the garden plants I had started last spring. The plants were on the south side of the house, right against the house in fact, and the ^&*( forest rats found the plants and ate them all.

As a result, the garden was growing weeds this summer.

Three mornings in a row when I left for work, an adult deer was IN the garden. The garden has a six foot tall fence and the deer have never gone into the garden before. There was plenty of food outside of the garden and only weeds inside the fence. I think the deer was jumping into the garden since it was protected. I did not hear anything chasing the deer, I think she just figured that the fenced in garden was secure and in she went. I had always read, and many local fences are eight feet tall. I gambled on a six foot tall fence which did protect the garden until this deer jump the fence. Well, it is a temporary fence so I guess it is time to build the proper fence eight feet tall.


My dad did bring up a predator caller one year and called in something. But he had taken my GSD out with him and when the predator was running to the caller, my dog chased off whatever was being called. NC passed a law this year that finally allows night hunting of coyotes.
Later,
Dan