I actually love the idea of this law. Do they have any licensing program for these animals?

Personally I think if you have an animal as a pet and it is venomous or actually large enough to cause harm (this includes a lot of dogs) then you should have to register, and they should have suggestions on enclosures. And it's the kind of thing they should keep up on and actually come by your house from time to time to make sure your animal is doing well and you're keeping up with things.

Other than creating some minor hassle, if you are a responsible pet owner then this will be a simple nuisance, but it will stop people's small dogs from disappearing and stop potential attacks on people.

Also, I do firmly support them having affordable classes to go to that will teach you to handle very large or very venomous animals (with people who actually know what they are talking about).

And you should still have to register if your animal has had it's venom glands removed (because it's offspring will be venomous).

But, seriously, I don't see how any of this can be seen as unreasonable. That'd be like arguing that it's unreasonable to make you have a license for a car.