I have two Border Collies and a Aussie/BC mix( female). My Aussie mix plays with my 7 yr old BC male fine, but when he comes around me she grows at him. She does this mostly when I have food and I understand this as when she was a puppy ( she is 16 months now) he used to take her food. I feed them away from each other so this doesnot cause problems now, but the other can be when I lay down in bed, she will not allow him to come close to me. She however will allow the other female older BC to be right by me, no issues at all with her. Do you know what she might be trying to do? I usually tellher no, and call the male to come over by me and she lookes at me, like what are you doing?