I have several bucks visiting this spot on a regular basis. I have two other cameras that I haven’t checked in a few weeks, I’ll pull the cards this week some time.
Big humane traps....coyotes usually won’t go in them. Dogs aren’t as intelligent. Catch the dog/s, then call animal control to come pick up or deliver dogs to them.
I’m gonna say about 20”. His ears are at least 16” from tip to tip. That buck is a stud. It should be encouraging that he has shown up there at this time of year. That probably means that he has returned to his core area now that the rut is over.