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  My second boy, Maxie, was 4.5 # at 15 months...I thought he was probably full grown...  but at 2 1/2 now, he weighs 6 #, and the additional weight is mostly muscle.  He had been kept kenneled.. his little legs were almost bird like.  But he runs in the yard and play fights with my 4 year old Yorkie, and he's strong as an ox now.  Your baby will probably be on the larger side.  Marley weighs in now at 9.5 # after rescuing him at age 2 at 7#.  He's not fat at all... (well, maybe a little).  It looks like they gain significant muscle mass at 2+ years old as they mature.  Consistent 1 mile walks with correctly clipped nails will keep him at appropriate weight -- whatever that is.  Marley walks a mile in the morning and again in the evening.  Maxie holds out for the outbound walk, but then whines to be carried home.  |