Each one of my dogs that I've brought home I knew they were mine from the start. It was a feeling and I haven't been wrong. I bought my male when he was a quivering 7 months old, and my female when she was 8 months old and a ball of energy, and now I have an 8 wk old chihuahua pup boy who is every bit thinking he's a yorkie and the Yorkies love him to death. Happy household all the way around.