To report someone who has a pitbull?

[IAmNotLego]

They boast about it being a pitbull, in IRL and on Facebook. Told me they weren't going to have it neutered (so it would continue to grow as big as possible), but had registered it. Surely it would need to be neutered? As part of this?

They told me they have it muzzled in public.

Second conversation. They've said it attacked 2 dogs, so has now been neutered.

I've seen the dog out in public without a muzzle and off lead..

I'm sure some will tell me to mind my own business. But I'd feel awful if something happened to another dog/animal or a child and it could have been prevented.

I have certainly seen a good amount of news articles detailing Labrador attacks and I've encountered a fair few vicious labradors myself too.
They are not a breed I'm entirely comfortable around

I have certainly seen a good amount of news articles detailing Labrador attacks and I've encountered a fair few vicious labradors myself too
They are not a breed I'm entirely comfortable around

Which is fine. But it really isn't the same as this, is it?
Whether they are listed on that particular list or not Labradors are consistently near the top for bites!
According to what? (aside from the one insurance 'study' of course)