I'm sorry but that response seems callus and uncaring. What this lady needs right now is sympathy and empathy, not opinions froma stranger on her pet status. it happens to the best of us, animals are animals and can do animal things, the cat hardly sounded like the ideal feline to socialise puppies with and preferred a solitary lifestyle. They didn't know him and he them, and so it led to a horrid and emotionally painful ending. The dogs are not to blame and the cat is not to blame, and you guys are not to blame. When we bring animals into our world we have to be prepared for them to occasionally regress to their natural instinct, no matter how horrific it may be (it has happened to most of us, i'm sure, be it annoying behaviour to extremely terrible) Now that you are aware of your dogs dislike for it's feline brethren I would perhaps seek professional advice on what to do, so that a neighbours cat does not come to the same fate. But for now I am truly sorry about this circumstance and I plead with your boyfriend, not to let his injured emotions influence him into making a hasty and very possibly wrong decision. Again, i'm very sorry.