Cats as far as I know are by the very fact of their nature not governed by any law , however & I'm not sure about if it comes onto your property but I'm sure someone will tell you, if your dog attacks & maims or kills in the street , then you can be prosecuted at the least for causing suffering to the animal, it's always been against the law to allow an out of control dog to attack others, it's also against the law to allow a dog to roam the streets , but like everything else implementing it is another matter, in my opinion all dogs should be microchipped!.