How much food should a 2 year old beagle be eating a day?

General rule of thumb for feeding any puppy (under one year of age) is one cup per ten pounds of body weight per day. So if your beagle is 20 pounds at 8 months, he/she would get two cups per day split into two or three meals. Upon entering adulthood, the feeding amount should be about one cup per twenty pounds per day. So that same 20 pound dog would get one cup of food per day split into two meals. However, this can be slightly more or less depending on your pet's activity level. If he/she seems to be getting to heavy, decrease the amount.