I would separate them for the first few days as well. Sissy loved having yorkie play dates and always got along really well with everyone else's pups, but when she realized Angel wasn't leaving, it was a different story. Angel has been with us 6 weeks now and I'm just getting to the point where I will leave them along together for short periods of time. I put Angel right onto adult food so we didn't have an issue. They get Solid Gold Wee Bits (which are much smaller than the puppy bites)!
Congratulations!!!!
__________________ Sissy & Angel |