I have 5 dogs, 1 adult cat and a 16 week old kitten I got a couple weeks ago. Everyone gets along great, except I noticed yesterday one of my dogs is possessive over the kitten. He was standing next to the kitten and two of the other dogs casually walked up to say hi, and he growled, barked, and lunges at them as a warning to stay away from the kitten. Wondering what I can do to stop this behavior. Any ideas? Thanks!