Hello again, For those with experience, please be gentle with this topic. I know this is the case with all breeders and if you are going to breed you have to be ready for this conundrum, none-the-less it is difficult. So please do not do the lecture of 'well this is what you need to do!' I know this, but it doesn't make it easy in the real-life scenario and as much as I mentally prepared, the bottom-line is challenging. I have 5 beautiful border collie puppies and I need to sell some of them. I prepared for this prior to breeding, during pregnancy, even during the 1st few weeks of their life. But then they develop characters, personalities - they look at you as a protector, a source of love/companionship...apart from their mother, you are generally their greatest source of everything they know, respond to, seek affirmation from. This part gets difficult to say - I love you, of course I do. I care for you but I can send you off to the unknown. I'd of course vet any prospective buyers but it is still an unknown. Not looking for a psychological analysis - but how does one see a puppy, 2 puppies, etc as lovable, but ultimately - you have to pick which ones you love best sort of? The one(s) with the best characters (how?) or whatever your determining factors/characteristics are (even looks may factor into the choice reason). For me, they each are beautiful in character. They are learning, developing & loving. Many go through stages of being more boisterous, then they become more introspective at times - it's hard to know their character when it is a developing aspect of their puppyhood. They are of course all adorable - beautiful looks, build, face. So I hope that those with the experience, can think to the 1st time they had to do this and how they - if they are animal lovers (and yes, getting them homes is still animal love - I know) - they were able to separate one love from another to choose those puppies. If you are pragmatic, and this is par for the course your love of the puppies is focused on love of getting them into homes, you may not be the best person to talk to - I am seeking people, like me, and their process of transition from one type of love to another. I get that the other has to exist - I hope to learn from those who had to make that transition.