I'm not sure I'm feeding my puppy enough food. She is consantly looking for food, steals it, and scavenges too. Shes a 20 week cocker spaniel who weighs approx, 8 kilos. She is slim built. I feed her Hills puppy chicken dry food, sometimes with natural yoghurt, sometimes with gravy topper. She has some snacks in between meals during the day. But she contstantly seems starving. I dont weigh but i give her a generous handful , 3 times a day. Am i not giving her enough?