They won't attack humans. They would need to be near starving and in a pack before they would even think about it. If their pray makes enough noise and is big enough, it will leave them alone. We never heard yotes here when we first moved in but knew they were in the area. /I know the first time that I heard them they were across the fence line, about 100 yards from me and I just about jumped out of my skin. We never saw the, just heard them until this year. Dh killed one hunting and saw a couple more that were out of range. They don't have anywhere to go because even the country is starting to fill up with people. They don't have any real preditors except for humans. Many states have open season with no limit on them, so killem if you can. Sorry if that offends anyone, but I not going to lose my live stock or pets because of them being over populated. They will die of starvation and to me it is mor humane to shoot them and they die quickly than starve.