Ghost, in case you missed it, I was talking about the people joking about killing cats being less than amusing and creepy, not the dog.
And FWIW, killing is not something that well-trained dogs should do as far as I'm concerned. I have multiple mastiffs here. And street dogs. Along with 6+ barn cats. They all co-exist with equanimity. We have raised them all from puppies.
Unfortunately this dog is not a fit and while I don't blame him for not receiving training at an earlier age, he also needs to go to a home where he will be a better fit. Which as a I said, is a home with no other animals and an owner experienced in handling big dogs.
Anyway, this is rather tangential and again, if anyone is interested, please let me know. Thanks.