This invention relates to a pet food composition for regulating body weightand preventing obesity and related disordersin pets, which comprises as an active ingredient at least one plant or plantextract having the ability to stimulate energyexpenditure and/or fat burning. The invention also relates to a method forimproving the health of pets, particularly by preventingobesity and metabolic disorders associated with obesity in pets. It alsorelates to a method for increasing energy expenditure, controllingthe glucose homeostasis and improving activity or mobility of the pet.
