I have three and don't have that problem, I make sure that they know I'm the pack leader so what I said goes. I think that your Katie want to be the leader. When I feed my girls I always there. In the begining if one try to eat the goodies of each other, I will say nono and put them back in their dish, now they don't even try only if one is finish then they will ck out the left over of each other. Now all of mine pile up to each other and share space, but I think if one of them don't want to share I will put her down and pick the other one and put her in the same spot or I will tell her NO and put them next to each other and monitor the situation jmo