Great pic of your security team!!  And very interesting to read about your dog.  I do appreciate that you need to keep your sheep safe.  We worry about foxes and badgers, which seem nothing compared to coyotes and wolves!!   Although we do have a big fox problem, now the hunting ban is with us.  Robbie is a guard llama for the large free range flock of hens I have, and he does a good job. I have had him a year, and lost two hens, but they strayed off my land, and the fox got them.  So, on the whole he does a good job.