We have a six-year old, otherwise happy and healthy cat who always complains for food. She is on a very healthy low-cal food that we purchase through her vet. When she was about 3, we did put her on a diet (vet monitored) and she went from 13 lbs to 10.5 lbs. It's understandable that she was hungry during that time, and the reason she got heavy is because we initially fed her too much because she seemed honestly hungry. But for 3 years, we have been diligently feeding her 1/4 cup of food at regular times, 3 times/day. For a while we gave two feedings of dry and one of wet, but it really didn't make much difference at all in her hunger level. She is playful, is indoor/outdoor and seems to think her life is pretty great...except for the empty belly. She does not have worms - we have never seen any signs but even so we give her regular de-worming pills because she hunts. The vet has continuously told me that her incessant meowing is just a habit. I understand behaviour modification, if that's what the vet is getting at, and after 3 years of us being really diligent about only feeding her a specific (and adequate) amount at a specific time (despite her complaining), it seems logical that she might get used to it. As much as we love her, I sympathise - it really is frustrating to have a cat who meows desperately for food. We want HER to be happy, and it's also really trying to have her complaining desperately for hours. She usually starts about 1 hour before her regular feeding times, sometimes up to 2 or 2.5 hours. When we have gone away overnight or something and put a full day's food in her dish, she eats it all right away. When she hunts, she eats ALL of what she catches. She really is nutty about food, and right from when she was a kitten, she did not seem to be able to regulate her own eating through free feeding. After three years of being really diligent with her feedings and not seeing her relax at all, we just tried upping it to 1/4 cup 4 times/day. She was very happy for about 4 days, and now she's used to it and starts complaining for food before this fourth feeding as well. We know that increasing her food intake again is not the answer. She's a well cared for, well loved cat with cat parents who have been firm but kind - we just wish she would not be do desperate for food. I am interested to hear any ideas.