 We call them love bites, but are they really love or maybe they're something else? We'll talk about that as well. And a new study suggests that you should not say hello or goodbye to your dog when coming or going. The study says not greeting your dog when you arrive home or not saying goodbye when you leave. Some trainings and behaviors say by saying goodbye and hello, you're actually creating separation anxiety for your dog or cat. True or false? We'll find out.