I feed twice a day because my male has IBD, and I don't think he would do well on a once a day plan. He eats a little over 1 lb a meal, but I said 2 lbs a day. One of the girls is 60 lbs, and one is 70 lbs, but the bigger girl is built like a tank, so in order to keep her from getting fat, they both eat almost the same amount, around 1 1/2 lbs for the day.