Is your cat over weight?
18 May 2023

Is Your Cat Overweight?

There’s more to be a cat owner than just providing food and shelter. It’s your responsibility to ensure that your cat is the right nutrition, but also that they’re maintaining the right body condition so they remain in good health. 

It can be hard to know whether or not your cat is overweight, underweight, or just right, which is why we’ve put together this guide to help. Plus, we're going to take a look at the best cat food to help your cat reach their optimum weight. 

Key Takeaways

  • The average weight of a cat varies depending on its breed, age, whether they're neutered, and more.
  • The only sure way to tell if your cat is overweight is to use a cat body chart or speak with your vet. 
  • Your cat being underweight is as dangerous as being overweight, leading to several medical issues as your cat ages. 
  • Choosing a weight management cat food can be a great first step to helping your cat lose weight. 

Contents:

A tabby and white cat with bright green eyes looking expectantly at the camera waiting for their empty food bowl to be filled. A tabby and white cat with bright green eyes looking expectantly at the camera waiting for their empty food bowl to be filled.

Average Cat Weight

There’s no one-size-fits-all average for a healthy cat's weight because cats come in all shapes and sizes. Several factors contribute to your cat’s healthiest weight, including their breed and size. For example, what is considered a "healthy" weight for a Maine Coone will greatly differ from smaller breeds, like 

While some people claim as a general rule that cats should weigh on average 4kg, the more indicative way to know if your cat is a healthy weight is by looking at their body and comparing it to our cat bodyweight chart.

Cat Weight Chart

Using this numbered chart, you can visually compare your cat’s body to the images to ensure they are the right weight. If your cat is longhaired, it can be difficult to judge their weight visually, so make sure to feel their body with your hands as well and ensure things are feeling as they should. 

A colour-coded cat weight scale to help identify if a cat might be overweightA colour-coded cat weight scale to help identify if a cat might be overweight

Is Your Cat Underweight?

Your cat being underweight can be as detrimental to their health as being overweight, especially if they’re not eating at all. Without the proper nutrition to fuel their bodies, underweight cats have very little energy and lack the necessary things their bodies need to fight off infections or cope with injuries like a healthy cat can. 

Being underweight or a change in your cat’s appetite may also be a sign of something else being wrong, such as the following: 

  • Diabetes
  • Cancer
  • Dental pain
  • And more

If you notice your cat is losing weight quickly while still eating or has been off their food for more than three days, contact your vet as soon as possible for a consultation. 

1 - Very Underweight

The cat’s spine is clearly visible if your cat is short-haired and has prominent hips and shoulders. Cats matching this image will also have a severe abdominal tuck and no body fat. 

2 - Moderately Underweight

To match this image, your cat will have visible ribs and lumbar vertebrae (on short-haired cats) and no body fat. These cats will also have a severe abdominal tuck and hip bones that are noticeable to the touch. 

3 - Slightly Underweight

Here, you can feel your cat’s ribs very easily with minimal fat covering, and their lower back vertebrae will be visible. Your cat’s waist will also be very obvious. 

Is your cat not eating? Find out why here.

Is Your Cat an Ideal Weight?

This is the ideal weight range for your cat to be in. They’ll still have their full range of movement to maintain their regular self-grooming, as well as be able to use their muscles to run, jump and climb to their heart's content! 

4 - Optimal Body Weight

This is one of the best body conditions for your cat. Here, your cat will have minimal fat on their ribds and you should be able to feel their lower back vertebrae. Your cat's waist should also be discernable when you look down at them from above. 

5 - Optimal Body Weight 

Number 5 is also an optimal body condition for your cat. Here, your cat should look well proportioned with a clear waist and ribs obvious to the touch beneath a cladding of fat. 

6 - Slightly Overweight

This image shows your cat edging into the heavy-set side of the cat weight scale. Your cat will look well-proportioned but may be a little rounder with a not well-defined waist. You may only be able to find their ribs when actively looking for them or pressing harder than necessary. While your cat is not overweight, they may become overweight without a slight change in diet or lifestyle. 

Is Your Cat Overweight?

Obesity in cats is as dangerous to their health as being underweight. When a cat is overweight or obese, they are more likely to develop certain health conditions and may have a shorter predicted lifespan. 

Some of the conditions that obese cats are at risk of include:

  • Diabetes
  • Poor immune system
  • Liver failure 
  • Arthritis
  • Poor Grooming

If your cat matches any of the descriptions below, then it’s important to speak to your vet as soon as possible for advice on how to help them lose weight. 

7 - Overweight

Cats matching this image will not have easy-to-find ribs due to a “padding” of fat. Their waist is poorly defined, if it’s noticeable at all, and their abdomen (tummy) is rounded. 

8 - Very Overweight

If your cat is close to this image, then they are likely obese. In this case, your cat’s ribs can only be felt when applying direct pressure, and their waist isn’t noticeable to the eye. They’ll also have an obvious layer of fat. 

9 - Obese

This image is a worst-case scenario. Here, your cat is obese and at risk of many health conditions that affect their heart and mobility. For your cat to reach this point, their ribs cannot be felt by hand, and their face and hips have a layer of fat over them. In this instance, your cat will also have stomach distention (a big belly)

How to Help a Cat Lose Weight

You must speak with your vet before making any changes to your cat’s food or lifestyle. They are the best person to advise you on any changes that need to be made and over how long. Weight loss isn’t something that happens overnight, and by restricting your cat’s diet too much or pushing them to exercise too often, you can do more harm than good. 

Your vet will likely suggest one or more of the following: 

  • To gradually reduce your cat’s daily food allowance 
  • To cut down on your cat’s treat or even cut them out of their diet entirely
  • To switch to a condition-specific cat food formulated to keep your cat feeling full and satisfied with a lower calorie count, such as the Royal Canin® Satiety Cat Food
  • Encourage more regular exercise, either by playing with your cat more or by using interactive cat toys like the KONG® Active Swizzle Bird Teaser Toy for Cats.

With patience and a lot of love and encouragement, your cat will be back to a healthy weight in no time! 

Monitoring and maintaining your cat’s health is your key responsibility as a pet owner, as well as giving them all the love they deserve.

If you're trying to improve your cat’s health and think they could use a little extra support, check out our range of cat food supplements and condition-specific cat foods, and start loving them well for less. 

A long-haired brown abby cat walking across the kitchen counter towards an orange bowl of food with overlay text that reads "Shop Condition-specific Cat Food"A long-haired brown abby cat walking across the kitchen counter towards an orange bowl of food with overlay text that reads "Shop Condition-specific Cat Food"

Written by a human named Hannah Clark.


This post is an opinion and should only be used as a guide. You should thoroughly discuss any change to your pet’s care or lifestyle with your vet before starting any program or treatment. We update content regularly to reflect the latest pet health standards.

This post is an opinion and should only be used as a guide. You should thoroughly discuss any change to your pet’s care or lifestyle with your vet before starting any program or treatment. We update content regularly to reflect the latest pet health standards.

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