We did it about 6 weeks ago

!!! We have a 3 1/2 year old yorkie and wanted to get him a friend for a long time. We bought another male, not really for any reason. At first Teddy (the older yorkie) was afraid of the puppy (Pippo). He would run away whenever the puppy came near him (it was kinda funny!). He would also stare from far away and peek around the corner when Pippo was playing! It took about two weeks I would say for Teddy to get over it! They now are becoming best pals

! Teddy is still a bit shy if you force them together, so we dont. But they are playing tug of war...and have physical "battles" daily. It is so cute

. I have even caught them laying in the same doggie bed now! It is so much fun. There is alot of love in the family and it has just brought more!! I think it is a great idea!!! Good luck