If naay changes sa diet nila sir like amount of consumption ... maka ingon gyud ka na lose of appetite and the number 1 factor na cause ana are MITES then comes in second ang WORMS .
Other than that ... healthy gani , wala nag lose ug weight then keep it like that but dont feed them basta binlan nila . Take the bowl , hide it and dont give them food . try it for a day ... dili ba the enxt time mo feed ka murag gi tilaan ug iring na because they know , if they dont eat ... they will starve .
Lastly ... these are LARGE DOGS . They need frequent excercise . I walk sila ... make them feel exhausted thru workouts . Gutom na sila pirme .