Dangerous Dogs

I am listening to my hon. Friend's proposals very carefully, and I hope to be lucky enough to catch Mr. Deputy Speaker's eye later, as I want to say something about the 1991 Act. Where does the support for the Conservative party's proposals on these matters come from? Where has my hon. Friend sought advice, and how does he think the proposals would work in practice? I agree very much with what he is saying, but I am concerned about the practical implementation of the policies.