First a little background. Daisy, our Staffy is 9 months old. From the time she was 3 1/2 months until 8 months we all lived at my in-laws house while our house was being remodeled. So she views their house as hers. 2 weeks ago my brother and sister -in-law moved back from AZ and into my in-laws house. They brought their dog with them. She is a very timid dog and really only interactes with them. From the time Daisy met her the first time she tried to engage her and get her to play. When that did not work (the other dog just stands there) she grabbed her coller and started pulling her around. :twisted: I stopped her, but ever since then whenever Daisy sees her she tries to do it. My in-laws watched Daisy this weekend while we were out of town and when I picked her up today my mother in-law said that I nede to teach Daisy to play gently with the other dog. I am at a loss...I know that Daisy may not get along with all dogs but she has never had an issue like this before. Is she being agressive? Or just playing? Is there a way to teach her to play more gently or do I just have to keep her seperate from the other dog? As a side note, she plays with my mom's 2 dogs just fine but they also put her in her place is need be. HELP!