Hi! I have a 3 year old, 11 pound(not fat, tall and all muscle) intact, male Chi named Junior. My husband and I got him as a puppy, he was 12 weeks old. We got him 4 months before our wedding so JR was living with just me. He was a fun loving puppy. When my husband and I got married, JR actually chose my husband over me and seemed to want to be with my husband more than me. Which was fine. Since then, my husband deployed for a year, has been gone for a little over 6 months here and there in the last year and a half and we have had our first child. We also have a yorkie which we adopted when JR was about 10 months old. They are great buddies and playmates(never had an issue). Once my husband came home from the year deployment, JR was more attached to me. He was protective if my husband moved too quickly towards me or disturbed JR when he was sleeping. Also, during the deployment, JR (he is crate trained and LOVES his crate. He goes in his crate when we are not home and at night) started biting me when it was time to come out of his crate. When I got pregnant, JR got VERY protective over me. He used to love meeting other dogs and playing and once I got pregnant he started attacking other dogs. Our daughter is now 9 months old. JR is GREAT with her. She chases him, falls on him, takes his toys, you name it...and he just lets her. BUT he is EXTREMELY protective over her and has progressively gotten more and more aggressive with my husband. I have tried many things from putting him in "time out" when he does wrong, to talking nicely to him and trying to calm him down to ignoring him and many other things. Nothing seems to make a difference. He is quite unpredictable. What will set him off one time will get no reaction the next. Any suggestions are greatly appreciated. Sorry this is so long, but I wanted to include as much information as I could. Thanks so much!