The RSPCA are now involved. They have collected the cats body as evidence.    Unfortunately, I saw it. I wish I hadn't.    The police were able to contact the owner as the cat had a id tag. The cat was called Ollie and he was 2 years old. It was a brutal attack and the attitude of the young men involved was that - it was natural for dogs to kill cats, it's their nature. The not very helpful police officer agreed - but admitted that she had never heard of a dog actually catching a cat and killing it.     I tried to speak to the LA today - but got an unhelpful message back telling me to call the police. The owner of the cat has had a more helpful response from the LA, someone is going to come and speak to her about the incident.    I am concerned as the owner has no control over the dog and it could have been a child.