Please help.  I have a 17 mth old girl, 13 mth old boy and 6 mth old boy.  My 13 mth old boy is really being picked on by both of the others - but especially the 6 mth old boy who is very dominant and quite a bit bigger than the 13 mth old.  Last night it was like a dog fight.  The 2 were both on my 13 mth old boy and actually made his mouth bleed.  PLEASE HELP with any advice you can give me. 

It's very hard to advise on how to handle situations like this (apart from the obvious - keep them seperated when you're not around to supervise!) without seeing the dogs and what triggers these 'spats' - your best bet would be to get a recommendation from your vet re a behaviourist who will come in and watch the dogs interactions.  Three dogs of these differing ages is going to bring some serious 'rough and tumble' games, and some minor injuries (such as bleeding mouths, especially as he may well be teething) are to be expected.

You basically have 3 puppies young dogs who ae like kids when they get into rough games and over excited, things get out of hand and someonme ends up with a bloody nose. 

This is another reason why most breeders and expereinced dog owners advise not ahving pups together and leaving a decent age gap between dogs so that you have a mature dog to set an example for a pup.

You will have to play school mistress and supervise all play as they are not grown up enough to be allowed to play without supervison.  If they were pups in the wild they would all be the same age or at least a year appart and be under the supervison and discipline of their elders.