My greyhound, Sandy, a male,neutered, and 11 years old has started to growl and lunge at my other two dogs when they walk in the room or walk by him. He has never done this before, and has recently started to exhibit this behavior, ( approx last 6 months). What would cause him to do this? I will put a muzzle on him when he starts to growl, but I'm not always in the same room when he starts.What do I do?
Is your pet neutered? If not, this could be the problem. Good luck, vetcare