Great advice from Kerryn915. Although my second Yorkie came to us trained at 8 months, we still had separate walks in addition to team walks to get everyone acclimated.
My boys do get out of practice being around people and other dogs, so I try to keep them exposed as much as possible.
theMozer, I completely understand what you mean about being pulled down by 2 little dogs, lol. My boys are larger at 9 pounds, but I'm tall and strong and they still can come close to pulling me over when they are excited.