Why are cats fat when they get fixed?

Posted by: admin  :  Category: Cats
Double D asked:


I have a cat named stich and I don’t know why hes fat….I know its because he’s fixed but why?


12 Responses to “Why are cats fat when they get fixed?”

  1. Calli-Kins-Caliente Says:

    male cats get fat b/c they do not produce testosterone anymore which slows down the metabolism…

    you can switch to a low calorie food or food that is for indoor cats… Also, you can schedule feedings if you free feed the cat

  2. Twilight Fan! Says:

    Hmm…start trying to play with him more. My cat,is very skinny,and he’s neuterted. He has gained maybe a couple pounds,but VERY active. Lol, his name is Twitchy! After the squirrel in Hoodwinked.

  3. Anubis*Star Says:

    Your cat is fat because you over feed him. Plain and simple.

    When a cat gets neutered, it releases a different hormone that increases the chance of them getting over weight. But this just means that the owner needs to monitor his diet more closely. If you notice you cat getting fat, you need to start cutting back on his food and treats, and you need to start making him excersise more. Make sure you play with him more and make him more active.

  4. Megan D Says:

    because they swell up a little

  5. Crash C Says:

    when they get fixed they become lazy. just play with it more.

  6. blah Says:

    some website said there social life goes down so nothing better to do. but my friends cat never had a social life and he is getting fat

  7. old cat lady Says:

    My feeling is that the procedure for both male and female cats when they are leaving their kittenhood of boundless energy and start to settle into their adult life.

    That’s the time to begin your awareness of how much you are feeding your cat. The calories have to go somewhere and if the cat is less active they will stay on his body and become fat.

    Imagine a cat on a treadmill or in a pool as I have seen with dogs on TV! It’s not going to happen.

  8. latachia_2 Says:

    Not all cats are fat when they get fixed. I’ve only had one so far that is. He could probably use some more exercise,but he goes out & gets birds ,mice & such,so I know he is getting exercise. I’m thinking that someone probaly has a cat door & he goes in and eats there as well as here. (The recptionist at the vet suggested that idea,& I think it is probaly true!

  9. Jordan S Says:

    Reduce the amount of food you give and switch to a food that is high in quality meat protein(meat by products don’t count!) and low in carbs(corn,wheat,soy) and instead a small amount of oats or rice.

  10. Angry Y!A Nerd, Meaghan Edwards Says:

    Contrary to popular belief, getting a cat fixed doesn’t make them fat. Overfeeding them does.

  11. Windi Lea Says:

    Yes, getting a cat fixed does slow down the metabolism somewhat, this is true. Also, the activities of mating and producing offspring take a certain amount of fuel (i.e. food) to perform, that does not get burned if the cat is fixed. Another factor to consider is that not long after most cats get fixed, they stop growing so furiously, having gotten most of the way to physical maturity.

    Your cat did not suddenly plump up the day after it came home from having the surgery. It gradually gained weight over a period of time, and you sat back helplessly without realizing that you were allowed to adjust the portions of food you feed it. So here is a plan for you – gradually reduce the amount of food you feed this cat. Do it gradually so it does not get sick from the sudden reduction in food. See for more information about feline hepatic lipidosis, which is a dangerous condition cats are subject to if they experience sudden extreme drops in the amount of food they eat. You will want to plan to reduce the amount of food you put out by a small amount every few days. This gradual reduction should take place over at least a month, if not longer. Please consult a veterinarian about how to figure out what an appropriate portion would be.

    Here is something else to consider: refined carbohydrates in the diet. Cats do not need to eat them. Go read the ingredients list of the food you feed this cat. I’d bet a week’s pay that you will find wheat or corn in it. I’d bet another week’s pay that there is less actual meat in the food than you think – instead of having lots of high quality protein, it has by-products and meal. Here is a website that will tell you more about the ingredients that are commonly found in cat food, and how to select cat foods that are more nutritious and healthy: If you switch (again, gradual change, mixing the old with the new, over a course of ten days to two weeks) to a higher quality cat food, you may notice that your cat is more satisfied with less food. That will help the efforts to trim this cat down. Another advantage is that more of the food will be digested, so less of it will come out the other end, making litter box cleaning a bit less unpleasant. Hope this helps.

  12. Kat Says:

    He’s probly fat because he free feeds on dry food. There is NO such thing as dry “diet” food for cats. Dry foods are filled with carbs that make your cat fat. You can’t make a dry food without carbs, so there are no dry diet foods.

    The proper amount to feed per cat/per day should be about 5.5 ounces of wet (high quality grain free canned or Raw Meat/Bones/Organ) food.

    The calories in that amount of food are sufficient for most “normal” sized cats. Of course a highly energetic cat will need more food to keep it healthy, and a lazy cat will need less food to keep it from getting obese. But 5.5 ounces of wet food per day is a good place to start.

    Here is a fantastic site that will help you help your cat lose weight!

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