I introduced Kodak who was 2 at the time to his little sister Kamari and all hell broke loose. 

   Kodak was so spoiled because I thought he would be the only dog but eventually he needed a playmate.  So I opted for my little girl & she is so sweet.  He use to be such a good boy, then he would jump on her and fight at the spur of the moment.  She is smaller than him but she has been defending herself from day one.

  I literally had to seperate them at one time.  Well, she will be a year old this month and he is a lot better once he saw she will fight back.  But at one time during the first 3months, I thought I was going to have to give him to my mom.

   I did everything the same, and gave them both attention, but he didn't want her playing with his toys or nothing.

 He is neutered and I thought he would act so much better back then.  Now he's ok with her, they do play 60% of the time, the other 40 they are duking it out. LOL!  He had to come around but hopefully you'll have better luck than I did.  I love them bunches though. 
