Do dogs need to change their dog food?

Dogs need to change to different dog food as they grow, for example puppy food to adult food, but it is not recommended to change dog food frequently, as frequent changes can easily lead to gastrointestinal irritation, diarrhoea, abdominal vomiting, being fussy about food, not liking dog food and other symptoms. In addition, do not change the food too quickly, generally it takes seven days to change the food, the new food should be gradually converted, the new food mixed with the old food, the amount of new food added by less and more until completely replaced.