I just got a cat from the humane society, she is about 1-2 years old. she is very sweet, but the other day she threw up twice mostly whole food and it seemed it was from overeating. So i began limiting her food to the recommended value on the Science Diet Bag (3/8 to 4/8 per day for 6lb cat). This seemed to do the trick, but she behaves like she is starving, pawing at me, pawing at the cabinet, and running to the kitchen every time I enter. Is this normal? Should I feed her more? The vet said she is a good size/weight. I am a novice cat owner and could use advice.