Now that dog ownership, especially of large breeds, has increased hugely, controls that weren't necessary in the past, are now necessary.
All breeding operations must be strictly controlled and permits to own an unsterilized dog should be very expensive.
Certificates of sound temperament should be needed for dogs over a certain weight. The larger the dog, the more damage it can inflict.
Licence fees should be based on weight/breed of the dog.
Using dogs as guards should be banned.
Keeping dogs in yards should be banned.