Our little nibblet is 8 weeks, and 13 pounds! we feed raw too, but might be switching to ToTW to make sure shes getting completely what she needs. We're currently having to hide the 10% organ meat in peanut butter
My boy is 13 weeks and pushing 30lbs if he's not already there. We go to the vet Sunday. I feed him purIna pro plan large breed puppy. I thougt about doing the raw diet but I'm not sure yet I've never done it with any dog I've ever had so I need to read up on it.
Tyson has also struggled to put weight on. He is coming up on 2 years old (end of March) and weighs about 62-64 lbs. He is average height 27", and is VERY active. The doctor said that he is fine. He looks good from the side (minimal ribs showing), but when viewing from the top he is narrow.
I guess that he will put on a few lbs with age and as metabolism slows.
From what I have read, US bred Dobies can typically weigh between 66 to 88 lbs when full grown. I dont think that 50 lbs at 9 months is anything to worry about. But again, that is my unprofessional opinion.