We need penalties for those owners who allow their dogs to attack and kill other dogs, cats, and other animals. We need better controls on dog breeding, advertising and sales. Only when we insist on better behaviour from the person on the other end of the lead will we be able to address the dangerous owner problem.
There are strong rules and regulations on weapons, and gun licencing laws in place, yet anyone, anywhere can go out and buy a puppy from a pet shop or breed from their dog, which could potentially grow to be a lethal weapon. These dogs are on our streets and, despite looking cute, can be as dangerous as a firearm.