When we were looking at getting Maddy Waddy, we took Gizmo to Denise's house several times before we actually brought her home... but he wasn't very keen,keep in mind Denise(breeder) had the mom ,dad and 4 pups! So that was alot for Gizmo to take. It took about a week or two but eventually they he was okay with her. We picked up Maddy Dec.23 2005 and we are now Jan 10,2006 so it didn't take that long and now Gizmo defends his little sister from bullys or bigger dogs! Good luck with your decision!