I don't know, newpup, I'm not much of a fan of breed mixtures. I even less happy when they are breeds that weren't intended for at least the same general sort of purpose.
Rott's were originally general purpose farm and herding dogs and got adapted for use as other things. And even though they and Dobermans probably share a common ancestor (the now extinct German Shepherd) they are temperamentally quite different and enough different structurally that I don't regard them as a particularly good cross.
As far as Dobes and Pitt go--I don't think you need any more potential for dog aggression added to a Doberman. Pitts are named for what they were developed for--pit fighting--most recently for pit fighting with other dogs. And while a good pitt should never be agressive toward a person (they used to discard from all breeding programs Pitts that showed any aggression toward people) they are bred to be dog aggressive.
I prefer to stick to pure breds--you are much more likely to be able to reasonably get in temperament and looks what you thought you were going to.
Here's a little cautionary note--since I've been working in a vet clinic and see a lot of dogs that come in from rescues, pounds, humane societies and the like I've been amazed at what they get called in terms of breed crosses. Just lately anything that is black and tan and comes from our local humane society (which is a very good one) comes in as a Rott X--why, I can't imagine. But it made me laugh a lot when one of our clients came in with a dog which had been identified as a Rott/Aussie X--he was about 4 months when I first saw him and I told the owner then that I'd bet anything he cared to bet the the dog was a black and tan American Cocker Spaniel. At a year and a half now and trimmed like a cocker if he isn't purebred I'd be surprised and he was close enough to be ILP'd as a cocker and is now just starting a career in AKC agility.
On the other hand we get a lot of alleged lab crosses in that are clearly part pitt--no one wants to admit to pitt because of liability issues though.
Even though there are some Dobe crosses out there there aren't a lot--most of the so-called Dobe crosses appear to be more like shepherd crosses of some variety.
Rott's were originally general purpose farm and herding dogs and got adapted for use as other things. And even though they and Dobermans probably share a common ancestor (the now extinct German Shepherd) they are temperamentally quite different and enough different structurally that I don't regard them as a particularly good cross.
As far as Dobes and Pitt go--I don't think you need any more potential for dog aggression added to a Doberman. Pitts are named for what they were developed for--pit fighting--most recently for pit fighting with other dogs. And while a good pitt should never be agressive toward a person (they used to discard from all breeding programs Pitts that showed any aggression toward people) they are bred to be dog aggressive.
I prefer to stick to pure breds--you are much more likely to be able to reasonably get in temperament and looks what you thought you were going to.
Here's a little cautionary note--since I've been working in a vet clinic and see a lot of dogs that come in from rescues, pounds, humane societies and the like I've been amazed at what they get called in terms of breed crosses. Just lately anything that is black and tan and comes from our local humane society (which is a very good one) comes in as a Rott X--why, I can't imagine. But it made me laugh a lot when one of our clients came in with a dog which had been identified as a Rott/Aussie X--he was about 4 months when I first saw him and I told the owner then that I'd bet anything he cared to bet the the dog was a black and tan American Cocker Spaniel. At a year and a half now and trimmed like a cocker if he isn't purebred I'd be surprised and he was close enough to be ILP'd as a cocker and is now just starting a career in AKC agility.
On the other hand we get a lot of alleged lab crosses in that are clearly part pitt--no one wants to admit to pitt because of liability issues though.
Even though there are some Dobe crosses out there there aren't a lot--most of the so-called Dobe crosses appear to be more like shepherd crosses of some variety.