ANY dog can be trained to do gnarly things. But a poodle's bite won't be the same as a rottie that's for sure.
basic training
http://guarddogs4sale.com/basic-adva...-training.html
personal protection
http://guarddogs4sale.com/property-p...-training.html
That site is old and so is the material. It will have a makeover soon. It's my friend's business, now called Spartan Special Forces. I knocked up a logo and a BC below. Contact details are there. If you want some light training (or heavy training for that matter) for your dog, he can do it for you. From basics, like simply following you, through to bite & release.
If you give him a call, he's be a good guy to talk to about perhaps what dog you might want to get for your needs... trained or not.
And he has recently won rights to train all of the WA Police's attack dogs, so he knows what he's doing and what he's talking about.