2 Answers

You can also get "healthy weight" types of dog food.  My son's dog was getting chunky, and I switched his food. At 100 lbs. he gets 4 cups per day.  He's looking good now, and getting more frisky!  Of course, his boy is home now, and that helps! :D

She only needs to eat 1X a day. 1 cup per day is sufficient for now but I would ween her down to 1/2 a cup. She sounds like a small dog so you should check with her vet to find out what her weight should be and feed her according to that weight. You should try her on raw veggies as a snack food through out the day. My dogs love carrots and broccoli. Do not give her a lot of broccoli though if you find she likes it. Just two pieces per day. Carrots she can have the amount she will eat. This site gives other veggies she can eat http://www.ehow.com/list_6676959_raw-vegetables-dogs.html ** NEVER give her onions, raw or cooked. Onions are toxic to dogs.  

Taking her for daily walks will help her lose weight also.