Is My Cat Overweight? How to Tell and What to Do

A little extra padding can make a cat look cuddly, but carrying excess weight is not simply a cosmetic issue. It can affect how comfortably your cat moves, plays, grooms, and goes about everyday life. It can also increase their risk of several health problems.

The difficulty is that weight gain often happens gradually. When you see your cat every day, a few extra grams here and there can be surprisingly hard to notice. Long fur, a naturally stocky build, and the loose skin beneath the abdomen can make it even harder to judge.

So, how can you tell whether your cat is a healthy weight, slightly overweight or carrying enough extra weight to affect their health?

Australian figures commonly cited by the pet industry suggest that around one in three cats is overweight or obese.

This means many owners may not recognise that their cat is carrying excess weight, particularly when heavier cats have become increasingly common. Comparing your cat with other cats is not necessarily a reliable guide. Their individual body shape and condition are much more important.

You may have heard that an adult cat should weigh around 4 kilograms, but healthy weight varies considerably between cats. Breed, sex, age and body frame all make a difference. A small-framed cat may be overweight at a weight that would be perfectly healthy for a larger cat.

The number on the scales is still useful, particularly when tracked over time, but it does not tell the whole story. Vets also assess a cat’s body shape and the amount of fat covering areas such as the ribs, spine and waist. This is known as a Body Condition Score.

Rather than comparing your cat with another cat, the more useful question is: Does my cat have an appropriate amount of body fat for their individual frame?

Your hands may tell you more than your eyes, especially if your cat has a thick or fluffy coat.

Changes in your cat’s body condition may be accompanied by changes in what they can or choose to do.

You might notice that your cat:

• Hesitates before jumping onto furniture

• No longer jumps as high as they once did

• Uses several smaller jumps to reach a favourite spot

• Spends more time sleeping and less time playing

• Tires quickly during activity

• Has difficulty grooming their back or hindquarters

• Develops a greasy, flaky or matted coat

• Appears uncomfortable when climbing stairs

• Has a collar or harness that has gradually become tighter

Excess body fat is not harmless. It places additional strain on the joints and can make movement more difficult, creating an unfortunate cycle: moving becomes uncomfortable, so the cat becomes less active and gains more weight.

Being overweight or obese can also increase a cat’s risk of health problems including:

Health problems associated with excess weight can include:

• Diabetes mellitus

• Arthritis and reduced mobility

• Urinary tract problems

• Difficulty grooming

• Breathing and cardiovascular problems

• Complications during anaesthesia and surgery

• Reduced quality of life

The aim is not to make every cat extremely lean. It is to help your cat reach and maintain a weight that supports comfortable movement, normal feline behaviour and better long-term health.

In most cases, cats gain weight when they regularly consume more energy than they use. The difference does not need to be dramatic. A small daily excess can gradually add up over months or years.

Factors that can contribute include:

• Free-feeding or continually topping up the bowl

• Portions that are larger than the cat requires

• Treats and table food that are not included in the daily intake

• Several family members feeding the same cat

• Reduced activity in indoor cats

• Boredom or food-seeking behaviour

• Changes in energy needs after desexing

• Reduced mobility due to age, pain or arthritis

• Sharing a home with another pet and eating from multiple bowls

The safest place to start is with the team at Monier Vet Clinic. They can weigh your cat, assess their body condition score and help determine a healthy, realistic target weight.

A veterinary examination can also help identify pain, arthritis or other health conditions that may be contributing to reduced activity or changes in weight.

A weight-management plan may include:

• Measuring or weighing your cat’s daily food portions

• Dividing their daily allowance into several smaller meals

• Replacing free-feeding with scheduled meals

• Including treats as part of their total daily allowance

• Choosing an appropriate calorie-controlled food

• Feeding pets separately in multi-pet households

• Monitoring progress with regular weigh-ins

Cats are more likely to move when an activity taps into their natural desire to stalk, chase, climb and search.

Try several short play sessions throughout the day using a wand toy, rolling ball or toy mouse. Puzzle feeders and hiding small portions of food around the home can encourage your cat to work for their meals. Cat trees, shelves and safe elevated resting places can also add more movement to an indoor environment.

Start gradually if your cat is very overweight, older or reluctant to move. Exercise should be appropriate for their comfort and mobility, particularly if arthritis may be present.

Regular weighing makes gradual changes easier to spot. If your cat is maintaining a healthy weight, checking every few months may be enough. Cats following a weight-loss plan will usually benefit from more frequent checks.

Monier Vet Clinic can recommend an appropriate weighing schedule based on your cat’s starting weight, target weight, and overall health. Recording each result creates a useful trend and helps distinguish genuine progress from normal day-to-day variation.

It is not always easy to judge a cat’s weight, particularly when changes have developed slowly. A proper weight assessment considers more than the number on the scales. Your cat’s body condition, muscle mass, diet, mobility and overall health all matter.

If you are concerned about your cat’s weight, book a health and weight assessment with Monier Vet Clinic. The team can help you understand your cat’s current body condition and develop a safe, realistic plan suited to their individual needs.