This is what. Rottie should of looked like but ppl kept interbreeding in a small pool to get that massive mastiff face this is how they use to loook
and this was when they carried butchers meat to market 
and now they look more mastiff than anything my fella is nearly over weight actually they're supposed to be average 50kg for a male but some go over 60kg but they can't compete as the dog doesn't comply to the standards n now this is what a rottie looks like now.
I got mine from a farmers working line so my fella isn't 2 bad bit look at these they breed em for appearance not out of passion. I assure u this guys gonna have eye problems
and finally this monstrosity a rottie is a medium to large breed working dog,not a mastiff but an Italian mastiff mixed with a romantic sheep hearing dog.the breed nearly died out till some ppl in rottsdale started putting some hard work in but the damage has already been don't my fella is 1kg or so over weight but large dogs don't react best to being fat,it's alot of pressure on their joints n ligaments n shit. We weight the dogs food now n training days he gets apple slickest as a treat
..but this one's way 2 big the poor thing face is as mastiff as it gets but still a stunning dog.id stick with working lines now cuz they consider training play time