I have two lovely spayed girlies aged 3 and 7 years and an entire boy aged 2 years. I am thinking of adding one more to my little pack but have only had experience of more than one boy in a pack, years ago when living at home and they were my father's working labs. Milo is the daftest, loveliest, most non-confrontational boy ever but am I going to upset the dynamics of the pack if I add a dog puppy and will it inevitably lead to problems when puppy reaches adolescence? I have thought about a bitch but Milo is entire and, quite frankly, I don't want the hassle of having to keep him and an in season bitch apart for perhaps three seasons and I certainly don't want the patter of tiny paws. Neither do I really want to have Milo castrated although I realise I may have to have one of the boys 'done'. Has anyone any advice or experience, good or bad, that they can share?