
What UTTER rubbish! 'a bulldog is not the same as raising another breed, you need to add it (weight) while they are still young'....
That will NOT create a well muscled puppy at all, in ANY breed, in fact in ANY species!!!
As the others have said, fat does NOT turn into muscle. All fat does is hang around putting excess weight on immature muscles and joints. Thats VERY damaging!
Immature bones, joints, tendons, ligaments need time to grow to their full size and mature, THEN you can build muscle upon that frame, and even THEN you dont do it by excess feeding creating a fat dog!!!
Em