We adopted our four year old sheltie a few months ago and she was overweight. We are feeding her 1/2 cup dry Blue Buffalo chicken and rice in am and pm with 2/3 cup green beans added to dry food. She seems to be hungry all the time. She is a larger sheltie probably 15 1/2" tall but is larger length and bone structure. Does anyone else think this is enough or not enough food? Don't want her to be hungry. SHe is getting more active with our other sheltie and seems o.k. THey do get animal cracker twice a day. Thanks.