Pets

They need to neutralize a threat, size doesn't matter if they have a pack but I have heard of single coyotes attacking humans. They will attack a teacup poodle as quickly as a 100lbs mastiff... it's a dog species and they don't care much beyond that designation.

And the more coyotes you kill or remove from a place, there will be even more soon afterward. Studies done back in the mid 1990s showed this was the case.