Expected healthy weight increment for Rottweilers:
3 months - weight 14 to 17 kg (31 - 38 lbs)
4 months - weight 17 to 23 kg (38 - 51 lbs)
5 months - weight 24 to 31 kg (53 - 68 lbs)
6 months - weight 30 to 35 kg (66 - 77 lbs)
7 months - weight 34 to 40 kg (75 - 88 lbs)
9 months - weight 36 to 46 kg (79 - 101 lbs)
10 months - weight 36 to 50 kg (79 - 110 lbs)
11 months - weight 38 to 50 kg (84 - 110 lbs)
13 months - weight 40 to 50 kg (89 - 110 lbs)