3 for me with my recurve in 31 years of hunting.
Head shot my first one on the milk river in 1998.
The dog was coming down a hedge row between 2 alfalfa fields. When it hit an opening 15 yards away I squeaked with my mouth. It stopped and looked at me, all I could see was it's face. I hit anchor and let rip, the arrow center punched it's left eye.
The second dog fell to an arrow in 2003 while deer hunting in Connecticut, very little hair and smelled awful.
The third coyote I killed a couple weeks ago sleeping in it's bed. I was scouting for deer in wind driven rain ( I mean really blowing) long story short. Saw her at about 60yards curled up in a ball facing away from me. Was able to get to about 20yards, she never moved a muscle, her head was down on her front legs like a dog sleeps in front of a wood stove. Hit her behind the shoulder, she jumped into the air like a cat that had been electrocuted. Ran less than 40yards and went down. Would not have believed it possible if I had not seen it with my own eyes!