Your talking rubbish. Yes its possible for Coyote and dog to breed and yes they probably have but the likely of it happening all the time is nil. There are instinsts that all animals follow. I dont care whether the dog growls at you killing it is wrong. Expecially someone's pet!! Dogs growl for many reasons. They growl when they are scared and trying to sound mean, when the play, and yes when they are trying to defending something. I just cant help myself. I cant believe that a person could just kill someone's pet. I was watching this show on Animal Planet about all of the animals and the hurricanes. They were showing the animals reuniting with their owners after weeks and in some cases months!! The dogs (and owners) were just so happy. I couldnt help but shed a tear. I just think that is a sick way to "control" the dogs in your neighborhood.