By Dr. Gary Pusillo: A knock at the door and a giant blue creature appears! The creature says “trick or treat,” but your dog thinks “trick or eat?” The natural tendency of a dog when facing an unknown “invader” in its territory is to decide either to run or attack. Country dogs like my Komondor that have built in armor, do not retreat; they “eat,” or defend themselves. Latte the female Komondor that lives on my Iowa farm can be seen with my middle daughter Andrea during a chance meeting with a blue creature on...