Okay, you don't have to watch the whole thing but just to get the gist of how they "play"....does this seem aggressive to you or is this how sisters play? I really don't know. Luma has never hurt her and she has very good bite inhibition so I know she is just putting her teeth on Rosie gently and not biting down. Rosie is very much an instigator and its clear Luma is going to be the submissive one of the two. At the end you can see Luma trying to go to her water bowl in the kitchen but Rosie goes near it and Luma backs off. Luma is skittish in the kitchen because of the tile. Do you think it could cause Luma to be food aggressive in the future? I feed Rosie in her x pen and Luma isn't allowed in there or she tries to eat Rosie's food. Should I not allow Rosie to drink from lumas bowl?