I have a Terrier/Chihuahua mix; she is six years old. The vet says she needs to lose about two pounds; following the vet's instructions, I changed her food portions. But, she is still hungry, really hungry. She constantly sniffs the kitchen floor looking for crumbs; if I leave my plate unattended she will/has found a way to get to it. She is so hungry, I really wonder if she is getting enough food. Her max weight should be 7 lbs, she weighed 8.8. I feed her twice a day; 1/4 cup dry with 1 tsp wet, each time. Could I be starving her?