Why cat wont stop eating!?

I don't think it has to do with your other cat passing away.

More likely it has to do with the food you're feeding You should take him to the vet to rule out any digestive disorded, but my bet is on low quality food.

Cats need their basic nutrients from meat. Most of dry and commercial food are made with cheap fillers such as corn, wheat, soy and rice. These have no nutritional value for cats and are empty calories. After some time on this food, the cat will feel it's missing something and can start desperately eating everything in sight to get SOME nutirtion. Some cats even chew on carpets. So think about the food you're feeding. If you buy it in a supermarket, it's low quality.

I can't recommend to feed the dry food at all. Cats are designed to get their water from food. That's the way nature designed them, they have low thirst drive. When fed dry, they won't drink enough to compensate the lack of moisture. They will only consume about 50% of the water they should be having. This can lead to kidney disease, UTI, crystals, blockage, renal failure and more. Especially since you have a tom who has a narrower urethra than females, this is crucial, he's more prone to blockage from the crystals.

The only way to give the cat it's natural hydration is to feed it wet food only.

But some wet foods are junk too. That goes for most commercial foods. Just like the dry, they are often made with grain. This is not a part of cat's natural diet and they are not designed to digest it. Grain is carbohydrate that the cats can't process and it turns into blood sugar and fat, causing diabetes and obesity. In the wild, where cats only hunt for meat, diabetes and obesity are unheard of. It's us who cause it by feeding a species inappropriate food.

The healthiest food to feed apart from raw feeding is grain-free wet food with no by-product. Some good brands are Wellness CORE, EVO, Merrick, Nature's Variety, Felidae, Blue Buffalo Wilderness and more. These will give your cat the proper hydration and nutrition it's designed to get and it will be strong and healthy. And most importantly he will feel he has everything he needs and won't feel the need to eat this much!

Here are some great sites on cat nutrition which can help you in deciding what you want to feed.

Good luck!

It sounds like the cat has a dominance issue, or he has a tape worm. I would go with the first option though. Now that the older cat no longer lives there, he will try assert his dominance. I had a siamese for about 11 years and he did the same thing when he was full grown. He would try to eat the food in the other cat's bowl. I had to monitor the cats while they ate to make sure they both had enough. Right now my wife and I are taking care of 5 cats. We have similar similar eating dominance problems with them, too, so we just leave food out in five separate bowls during the day, and they eat at different times depending on what suits them. All cats are different though, so good luck.

While it is true that hyperthyroidism can cause an increased appetite, it is a disease typically seen in cats 10+ years old. It is also accompanied by weightloss, diarrhea, poor hair coat, among other things. It is possible that your 16 year old cat was previously the dominant cat during feeding, and with him now gone, your siamese is now taking advantage of the situation and eating his fill- and more.

You can try separating him from the other pets during feeding time. Feed them in meals as opposed to leaving food around all day for him to snack on. Once they are done eating, just pick up their bowls and let him rejoin his buddies.

Try calling your vet and seeing if they have any advice- they can definitely steer you in the right direction.

Our male cat is a bin-raider. I blame it on the fact that he lived rough as a feral kitten and was surviving on whatever he could find in rubbish bins when we adopted him. I think some old habits die-hard. I have a stainless steel pedal bin, yet I have woken on several mornings to find the contents of the bin on the floor, because he was after an empty bacon wrapper or the fat that was trimmed off some meat. Ideally I would have preferred to put the bin inside a cupboard, but I don't have enough storage space for that, so I have resorted to putting something heavy on top of the bin so that he cannot push it over when I am not around. Alternatively, if I am throwing out meat or bones, then I try to put the rubbish out straight away, so that he doesn't get tempted by the smell. So far, these things seem to be working.

The cat that died was obviously the head cat in the house and now this cat is trying to assert dominance.

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Your cat might have a thyroid condition. Hyperthyroid causes excessive eating and little weight gain and alot of other symptoms. Need to see your vet.

Your cat may have worms. You need to take him to the vet and have him checked out.

maybe he has a binge eating disorder