Yogurt

At work today, one of the girls said she read somewhere that you should only feed a certain amount of yogurt (the equivalant of 1/4 cup per 50 lbs) to your dog a week.  I feed a tablespoon - two two times a day because my dogs don't eat the kibble without it.  It's a result of me using it when they were on medications.  Does this figure sound familiar to anyone? 

Anyone's two cents greatly appreciated!