How Much Should A 7 Month Old Rottweiler Weigh?

Some are bigger and some are smaller. It's more what weight is right for your specific dog in most cases (unless purchased on a show contract with clauses detailing requirements). There are 45 pound Rotty's and there are 150+ pet quality Rott's so it could be difficult to say, lol. :-)

50 to 70 pounds

Depends if its male or female. Some females dogs could way about 48lbs to 55lbs and male dogs could get to a range of 60lbs -70lbs. Remember some dogs eat more than others . Also depends on how much you feed them.