Um...
I have a dog who would kill a cat if he got a chance.
To be fair to the dog, he was protecting his territory - that's what they're there for. A racing greyhound will have been triained to chase - a cat provides him with something he can chase.
I'd say trace the owner and apologise, but not too much. After all, the dog was doing what comes naturally to it. A dog killing a cat in his own garden is not classed as a dangerous dog (i checked this with the police when we had a wolf-mix) because the cat shouldn't stray into anyone else's garden anyway. Its an unforunate happening in nature.
No-one tells people to rethink their dog if it catches a rabbit, or a rat. Its because cats are domesticated, we think that they should be protected from other animals. Dogs don't see it that way unless they're brought up from a young puppy with cats. I've also never seen anyone told to get rid of their cat, or rethink it because its killed a bird. Its nature, its the food chain i#m afraid. just because a dog kills a cat doesn't mean its going to turn on a family member - or a member of the pack. In the wild, they'd kill it and either offer it to the alpha male, or eat it themselves.
If the dog shows aggressive tendencies towards humans (especially those that feed it) then the homing situation should be thought about seriously, and you should also think about whether the dog should live (i've been through this, and it was horrible, but the dog was a danger as soon as it turned on the pack leader), but not after killing a cat.
I'm afraid to say that in this house, if my dog killed a cat, i'd find the owner and return the body, but nothing else. If it was a certain cat in the neighbourhood, then i'd actually be quite pleased - the thing scares my birds all the time, and Finlay is out for it! I've never understood why cats are allowed to raom freely killing other peoples' birds and pooing in their gardens. I wouldn't expect anyone else to clear up after my dog, why should i have to clear up after someone else's cat?
We've actually spoken to the neighbours next door and warned them that our dog doesn't like cats, and has no problem with chasing them to get them. She replied that if the cats came into our garden, and Finlay's territory, then they're fair game. The cats are a bit cleverer though, and tend to walk on the flat roof looking at Finlay because he can't reach them
