Feed your beagle high-quality dry dog food, not "people food" like table scraps. If you use treats as rewards while training, break each treat into three or four small pieces and give one piece at a time. Beagles love to eat and are good beggars.
Beagle - Dog Lover
Recommended daily feeding amount: 3/4 to 1.5 cups of high-quality dry food a day, divided into two meals.
Feed your beagle eats depends on his size, age, build, metabolism, and activity level. Beagles are individuals, just like people, and they don't all need the same amount of food. It almost goes without saying that a highly active dog will need more than a couch potato dog. The quality of dog food you buy also makes a difference--the better the dog food, the further it will go toward nourishing your beagle and the less of it you'll need to shake into your dog's bowl.
Beagle - Dog Lover