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  I say go for it!  I just got my 4th last week.  I have one silky and now 3 yorkies.  Ages, 13, 8, 15 mos., and my new guy is agelessss(ha,ha)  No idea how old he is, he was found wandering, but maybe 8-10 yrs.  Anyway, never had any problems introducing them or getting along.  Although I always make sure I'm around in the beginnning just in case!  |