It depends on your struggle or weight loss programs. If you are looking for fast and permanent weight loss then you should try most successful weight loss diet program with daily exercises.
The exact amount will depend upon your diet. If you eat correctly, you should be able to lose 16 to 20 pounds.
My male presa weighed 48 pounds at 4 months
Depends how much weight you want to lose, how much and what kinds of food your eating, and of course how much exercise you're doing.
You would have to be dieitng and limiting your calories and eating very healthily, and then it also depends on the exercise. If the exercise is barely 30 minutes that one day a week, you won't really lose much weight. The best way to lose weight is to exercise 4 to 5 times a week for about an hour or so each time.