How real is littermate syndrome (where raising two puppies from the same litter, at the same time results in them bonding with each other only and shutting the owner out)? Does it happen frequently? Do they really become untrainable? Is it breed-specific? If there are two owners (ie. myself and my girlfriend) and we decide to individualize them with playtime/feeding/training apart for much of the evening, is this the remedy? Lots of questions, but our decision to get one rather than two 8-week old Boston terriers may rest on the response we get! PLEASE ADVISE!!!! I'm starting to get desperate!