signs your cat is hungry

I have been feeding raw to my three cats for years now, and I feel like I am constantly second-guessing if I am measuring out enough for Charlie, who is a large Maine Coon mix. Bella is in stage 1 CKD and has a smaller appetite, but she is stable. Pip is the playful one who seems to always want more. I am trying to establish objective signs of hunger that are not just about weight, since raw diets make it hard to count calories like dry food. I wrote up the details of my current protocol and the vet history in tracking raw intake for big cats, but I want to know what you all look for in real-time. Is it vocalization? Is it knocking bowls? How do you know when they are genuinely hungry versus just being annoying?

Behavioral cues are often the first indicator, but they are not reliable on their own. A cat that is hungry but has a medical issue might just pace or vocalize without eating. For instance, Pepper has hyperthyroidism, so she is always hungry, but her weight is dropping. See weight loss with hyperthyroidism for the specific signs in that condition. If a cat is not eating enough, the physical signs are usually a palpable spine, visible ribs without fat cover, or a tucked-up abdomen. But you have to rule out dental pain or nausea first.

For Shadow, who is blind, the signs are very different because he cannot see the food. He often bumps into the bowl or sniffs the air near it. I documented this in feeding a blind senior. If he is truly hungry, he will become more vocal and may follow my hand to the bowl. If he is not eating enough, it is not about hunger cues; it is about whether he can locate the food. Star, on the other hand, is hyper and will make a huge mess if he is hungry, but he also plays with the food. It is hard to tell if he is actually eating or just batting it around.

I am so worried about this because Chloe is shy and I am about to have a baby. I read somewhere that a hungry cat will meow more, but she is already quiet. I am not sure if she is hungry or just scared. I saw a thread about picky vs refusing food and it made me anxious. Is it normal for a shy cat to not show obvious signs of hunger? Or should I be checking her weight every day? I feel like I am doing something wrong by not knowing if she is eating enough.

My cat Whiskers has alopecia and I think it is stress related. He hides a lot. I just weigh him weekly. If the weight is down, I worry. What else do you guys do?

I overthink this constantly. Kiwi is a Bengal and Mimi is a ragdoll, so their appetites are totally different. Kiwi is energetic and will scream if he is hungry. Mimi is calm and will just sit by the bowl. I am not sure if Mimi is hungry or just waiting for me to notice. I checked picky vs refusing food again and it says to look for lip smacking, but I am not sure if that is a sign of hunger or nausea. I feel like I need a checklist. What are the specific physical signs that are not just behavior? Is it the waistline? The muscle tone? I am worried I am missing something subtle with Mimi.

I think the answer is in the combination of physical palpation and behavioral changes over time. You cannot rely on a single sign. For Charlie, I check his rib cage every morning. If I can feel the ribs easily, he is not eating enough. But if he is vocalizing and not eating, that is a different problem. I am still trying to figure out if there is a specific 'hunger signal' that is consistent across breeds. Does anyone have a method for cats that do not vocalize when hungry?