We got Shadow when she was only 4 weeks old from SPCA. It was discovered she was so young when taken to vet. She is loving and personable with husband and myself but usually hides from anyone else. About 2 years ago - when son-in-law visited - our granddaughter (3 years old then) swung her leg at Shadow but did not connect. Our son-in-law was behind her and scolded her and stopped her from doing it again. From that point on - Shadow targeted Dave - our son-in-law. She became a 'crazy cat' when he was around. She stalked him, growled, snarled, hissed, arched back, bared fangs, and once attempted to leap at him. We had to coop her up when he was around or make sure I was nearby. When he left - no more problems. The family came to visit this past August. Although almost 2 years later, the same behavior was immediate when Dave entered house. Once again, disappeared after they left. I know for a fact that Dave never did anything to her - was with him when it all started. Now about 2 weeks ago - Shadow has started the same behavior with husband. He is retired (early retirement due to chronic illness) and home most all day with her. Her aggressive behavior started when he had bought a cedar train whistle and blew it a few times - put it in basement - was coming up the stairs and she was coming down to use litter box. She snarled and growled - came back upstairs and went 'beserk' - arched back, hissing, ears flattened, snarling, peeing on carpet, etc. After husband cleaned up carpet - she stalked him and leapt at him. He had bucket in hand and swung it to protect himself. That was 2 weeks ago. Since then, she has slept by his side, sat on his lap with back to him, and within two minutes could be going totally beserk with no warning. Yesterday she went 'beserk' while in my lap and he just came to give me a portable radio. Pee'd on me, snarled, growled and leapt away. Help! My husband willing to be continually patient but is detesting when Shadow goes full out beserk and having to clean up after her. This cat has shown NO aggression to me at all. We will put her in separate bedroom with food and litter when I work if this continues. Any suggestions? Marcia