I saw a document of a guy working to improve alligators/crocodiles life trough searching their bad nutrition etc.
This guy was a basical man with will to work with animals and he practically lifted the reptile into the boat,opened it´s jaws (I´m not all sure how it went) stuck a pipe into his mouth to investigate what he had eaten etc. threw him back to water.
He had some courage,he was handling them as if they were kittens.
That was off-topic slightly,I would not recommend anyone to try that out!
Flattop Monk,
I would like to redirect you to street/reality fighting forum of kung-fu magazine,there was a big discussion on this.You´ll find it.
That sticking your hand into a dog´s throat may work,but you have to be quick and accurate,they´ll give you a small change if you do it correctly.
But if instead of that,they´ll attack your forearm as an example...
Rottweiler may not even be the worst case scenario,even though is very hard one.
Their jaws may lock up (as in some races,possibly) and they are able to withstand a great amount of pain,that is how they were made.
But they are much more than guard dogs,they do have various "occupations" which don´t involve mauling.
Just if you were interested.