I am the new owner of a 10 week old Lab/Pit/Mastiff name Rufus, I know this forum is probably for purebreds, but thought it would be the best place to ask. I have had large mix breed dogs in the past, Rufus already has a big sister at home Kali(8yr), Lab/Pointer/Dobie she is around 80 lbs, and my late Bubba was 90 lbs... my question is this, since he is part Mastiff (his Dad was 120lbs), should I be feeding him any differently then I did my other dogs when they were puppies? I keep reading about large breed puppy food, ect...... I am getting a bit confused. I would appreciate any help anyone could give me. Thank you so much in advance! 
