I have 4 yorkies but I never separated mine when I brought in a new one. Of course there isn't a big age difference. The way mine and my husband schedules are they are never alone too many hours. My last female Sassy (8 months) has been the most difficult, she wants to pick on the oldest girl Tessie (2 years) so I have to put her in timeout sometimes. I did separate them some at first because the other 3 did not like Sassy and I was afraid they would hurt her. Now she is the one that terrorizes them. I would put her in the laundry room with pads, water and toys and a bed. None of my dogs are crated they are confined to the kitchen /sunroom with a gate. They all get along good now except for a few arguments. Good Luck I am sure they will get along good it just takes a little time. Just don't leave them alone together until they get used to each other |