Introduction

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Obesity in cats is the most commonly diagnosed feline nutritional disorder. The latest figures suggest an estimated 60% of cats in the USA (Pet Obesity Prevention), 53% of cats in the UK (PDSA), and 32% of cats in Australia (Australian Veterinary Practitioner) are overweight or obese.

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Unfortunately, the number of overweight and obese cats has increased over the years, but as with all diseases, prevention is better than cure. By carefully monitoring our cats weights and being aware of how much and what they are eating, we can prevent excessive weight gain, and hopefully, the feline obesity trend can be slowed down and even reversed.

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In this article on how to prevent cat obesity, you will discover the following: 

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• What kitten growth charts are and how to use them
• How to monitor your cat's weight and body condition score at home
• Why it's important to adjust your cat's diet once spayed/neutered
• Our awesome cat food calculator to help estimate how much to feed
• If it's better to use digital scales or a cup to measure your cat's food
• How to calculate how many treats to feed and our top pick low-calorie treats
• Our favorite puzzle feeders to make cats work for their food
• Fun ways to encourage daily exercise
• How to prevent a cat from stealing another's food

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Why It's Important to Prevent Feline Obesity

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Obese cats are at an increased risk of multiple health issues that can be caused by obesity or worsen due to obesity. Not only is preventing obesity important for your cat's quality and length of life, but many overweight cat health problems are expensive to manage and treat. For more information, read 12 Obese Cat Health Risks.

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1. Kitten Growth Charts

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Preventing cat obesity starts from kittenhood. Waltham Petcare Science Institute has created evidence-based growth charts that can be used to check your kitten is following normal healthy growth. Never rely only on growth charts and always consult your vet to ensure your kitten's weight is appropriate.

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Plotting growth charts requires you to know your kitten's age in weeks, so if you are unsure, use our calculator below: 

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1. From 8 weeks of age (or as soon as possible), weigh your kitten every 2-4 weeks using accurate and comfortable scales, such as Beurer Digital Pet Scales.
2. Find their age (in weeks) on the horizontal axis and weight (in kg) on the vertical axis and make a dot where the lines intersect.
3. A kitten's growth should approximately follow one of the curves (centile lines); it doesn't matter which one or if the growth follows between two curves. 
4. If the growth you are plotting deviates significantly higher than the line they were following (crosses two or more centile lines upwards), your kitten may be at risk of becoming overweight, and the amount of food needs to be decreased. If the growth deviates significantly lower than the line they were following (crosses two or more centile lines downwards), this may indicate they have become underweight, for example, due to underfeeding, intestinal parasites, or an underlying disease. 
5. Always discuss the results with your veterinarian.
   

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2. Monitor Your Cat's Weight

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Aim to keep your cat at the weight they are once they reach maturity, at about 12 months of age, as long as they are their ideal weight and not already overweight. Record their weight monthly with accurate scales, such as the Beurer Digital Pet Scales. If you detect their weight trending upward, you need to reduce the calories they receive.

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Beurer Digital Pet Scales

• Accurate, reliable, and comfortable digital scales
• Easily monitor your cat's weight at home every 2-4 weeks
• Gain valuable information about their health and detect potential issues early on

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3. Monitor Your Cat's Body Condition Score

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Although checking a cat's weight is important, an ideal weight can vary from 2.5-7 kilos (5.5-15 pounds) depending on the breed and individual. Therefore, body condition scoring is a more reliable way of determining if they are a healthy weight, which involves a visual and hands-on assessment. A 9-point scale is used, with 5/9 being ideal, 1/9 being severely underweight, and 9/9 being severely overweight.

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Your cat should ideally be body condition scored at every vet visit. You can also learn the technique by reading How to Body Condition Score Your Cat. Keeping track of your cat's body condition score once a month will help you quickly detect and act upon any increases.

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4. Feed Your Cat a Suitable Diet

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Your cat's food should be suitable for their life stage. For example, kittens require a diet for growth, whereas adults require a maintenance diet. A gradual switch is made from kitten to adult food when they have finished growing, at around 12 months. Kitten food tends to be more calorie dense, so feeding it to an adult who has finished growing can lead to weight gain. 

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Consider feeding low-calorie diets, such as Royal Canin Appetite Control, to cats prone to weight gain, for example, if they are spayed/neutered, indoor only, and have low activity levels. Canned food may also help prevent weight gain because the higher water content dilutes the calories. 

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5. Feed the Correct Amount of Cat Food

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An important way to prevent your cat from getting fat is to measure out the correct portion of food for the day. The amount of food required will vary depending on your cat's weight, whether they are spayed/neutered or intact, and their activity levels. Feeding guidelines on the packaging can be used as a starting point. However, these are only estimates and the amount may need to be adjusted based on monthly weight and body condition score checks.

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We recommend using the Expert Cat Care Wet and/or Dry Cat Food Calculator to estimate how much to feed your cat based on their body weight and activity level.

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Always weigh the food with precise digital scales, such as the Amazon Basics Kitchen Digital Scales. Using cups to measure food is unreliable and can lead to accidental overfeeding. One research study found owners might accidentally feed up to 80% extra food when using a cup.

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It's also important to know that every time your cat vocalizes, it doesn't necessarily mean they are hungry and that you need to give them extra food. It's important to consider if they are seeking attention, such as for play or affection, or even if they're distressed.

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Amazon Basics Digital Kitchen Scale

• Affordable and reliable digital food scales
• Essential for accurately weighing your cat's food to prevent excessive weight gain

View on Amazon

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6. Limit Feeding Treats

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If you are feeding your cat treats or titbits, these calories need to be accounted for in their daily allowance, meaning you will have to provide less of their main diet. However, treats should not comprise more than 10% of their daily calories to avoid an unbalanced diet and nutritional deficiencies. Find out how many treats you can give your cat a day with our Cat Treat Calculator.‍

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To help keep your cat slim, low-calorie treats can also be offered, or vegetables, such as carrots and courgettes. To show your love and spend bonding time together, consider a grooming, play, or cuddling session, offering catnip, or going on a walk instead of treats.

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Product	Empty	Features	Price
	Greenies	Greenies Tempting Tuna Dental Treats The crunchy texture and unique shape helps clean teeth and reduce tartar Formulated with added vitamins, minerals, and taurine and made in the USA Contains 3468 kcal per kg and 1.4 kcal per treat	View on AmazonView on Chewy
	Purina	Purina Pro Plan Crunchy Bites Made with real chicken and natural liver flavor The crunchy texture helps scrape away tartar and plaque Contains 3,438 kcal per kg and 1.5 kcal per treat	View on AmazonView on Chewy
	DentaLife	Purina DentaLife Dental Treats A crunchy texture that's scientifically designed to effectively clean cats' teeth Formulated with additional probiotics, vitamins, minerals, calcium, and taurine in the USA Contains 3,429 kcal per kg and 1.4 kcal per treat	View on AmazonView on Chewy
	Temptations Meaty MixUps	Temptations Meaty MixUps Moist, soft treats made with real chicken and turkey Lower in calories than other Temptation Treats Contains 3237 kcal per kg and 1.2 kcal per treat	View on AmazonView on Chewy

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7. Decrease the Amount of Food Once Your Cat is Spayed/Neutered

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Spayed/neutered (fixed) cats are prone to weight gain due to a reduced metabolic rate, an increased desire to eat, and reduced activity levels. Therefore, the number of calories they consume will need to be reduced by 10-30% once fixed. Continue to monitor their weight and body condition score, and adjust the amount fed accordingly. 

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There are diets formulated to help maintain a healthy weight after sterilization, such as Royal Canin Appetite Control Spayed/Neutered for adult cats and Royal Canin Spayed/Neutered Kitten for cats less than 12 months of age.

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Product	Empty	Features	Price
	Royal Canin Appetite Control	Royal Canin Appetite Control Formulated to help sterilized adult cats maintain a healthy weight High levels of fiber help cats feel full L-carnitine supports a healthy metabolism Complete and balanced Available in wet and dry	View on AmazonView on Chewy
	Royal Canin Spayed/Neutered Kitten	Royal Canin Spayed/Neutered Kitten Formulated for spayed or neutered kittens from 6-12 months Reduced fat to prevent excessive weight gain once sterilized Optimum amounts of protein, calcium, and phosphorus to support growth X-shaped kibbles are the perfect shape and size for small mouths and new teeth Additional antioxidants, vitamins, and prebiotics support digestive and immune health	View on AmazonView on Chewy

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8. Make Cats Work for Their Food

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Use puzzle feeders to slow your cat's eating and increase their feeling of fullness. Puzzle feeders also increase activity and provide enrichment, helping to combat boredom and stress. 

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Product	Product	Features	Price
	Trixie Activity Fun Board	Trixie Activity Fun Board Five games in one Can be used with wet and dry food Slows down your cat's eating Provides mental stimulation Dishwasher-safe	View on AmazonView on Chewy
	PetSafe SlimCat	PetSafe SlimCat Easily fits one meal inside Your cat will learn to push it around to dispense their food Slow your cat's eating while providing exercise and play The holes are adjustable to vary the difficulty Dishwasher safe	View on AmazonView on Chewy
	Indoor Hunting Cat Feeder	Indoor Hunting Cat Feeder Place their food inside the mice and hide them throughout the house Encourages natural hunting behaviors Increases exercise Slows eating Prevents boredom	View on AmazonView on Chewy
	Lickimat Slow Feeder	Lickimat Slow Feeder A puzzle feeder designed for wet food Your cat has to lick their wet food from the crevices Slows eating Provides enrichment Whisker-friendly design	View on AmazonView on Chewy

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9. Daily Playtime and Exercise to Prevent Obesity

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A fifteen-minute play session once a day will help keep your cat healthy and avoid obesity. Use fishing rod-type toys to bring out their inner hunter, like our favorites Da Bird and PurrSuit (UK), which are extremely durable and sound and look like real birds.

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Another great way to increase activity is clicker training, which also provides mental stimulation and bonding time. We love the Cat School Clicker Training Kit, which includes everything you need to get started. Just make sure to use low-calorie treats (and reduce the amount of their main food accordingly) or use some of their food allowance for the day as a reward.

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Many cats also love going on walks, and you can teach them to walk on a leash and harness, such as the comfortable and hard-to-escape Kitty Holster Cat Harness. If your cat doesn't like going outdoors, or it's unsafe in your area, consider an indoor cat exercise wheel. We love the Star Cat Wheel, which is silent, safe, and durable, and has a moving luminous fish that grabs their attention and encourages them to run.

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Product	Product	Features	Price
	Da Bird Handmade Feather Toy	Da Bird Handmade Feather Toy Handmade fishing rod-style toy High-quality and durable (mine has never broken, unlike all the others) Sounds and moves like a bird, and cats go crazy for it Swish it along the floor and in the air to encourage exercise	View on AmazonView on Walmart
	Cat School Clicker Training Kit	Cat School Clicker Training Kit Contains all the tools you need to start clicker training your cat The perfect way to get your cat moving if they are food motivated Teach them to jump over obstacles, weave between your legs, jump to the top of their cat tree, circle around an object, and much more! Provides mental stimulation and strengthens your bond	View on Amazon
	Kitty Holster Harness	Kitty Holster Harness Easy to put on but difficult for your cat to get out of Made from soft cotton and comfortable to wear Let your cat acclimate to the harness in the house, then gradually progress to the garden, the park, and even hikes! The company donates 10% of profits to charity	View on AmazonView on Chewy
	Exercise wheel	Star Cat Exercise Wheel Made in South Korea As your cat runs, there is a moving luminous fish that attracts their attention Made from high-quality lightweight laminate birch that allows cats to gain momentum easily Designed with safety in mind, featuring a pin-brake system and a frame-to-wheel fit to minimize gaps and prevent accidents	View on Amazon

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Fun indoor cat play areas can also be created to encourage daily exercise using:

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• Large multi-level cat trees
• Wall-mounted cat shelves
• Tunnels
• Playhouses 

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Product	Empty	Features	Price
	Cat tree	IMUsee 68 Inch Large Cat Tree A high-quality cat tree that's affordable, easy to assemble, and has a sturdy design Multiple levels that are great for climbing, making use of the vertical space in your home Also has 2 hammocks, 3 soft beds, 2 caves, and a scratcher	View on Amazon
	shelves	CatastrophiCreations Wall-Mounted Gardens Set Beautifully crafted multi-leveled wall-mounted playground An excellent way to encourage activity and exercise Easy to install and sturdy design Fabric covers are removable and machine-washable 4 planters that we recommend using for cat grass	View on AmazonView on Chewy
	Tunne;	Pawaboo 5-Way Tunnel Cats love these tunnels for exploring, playing, chasing, and hiding Hide kibble and play with toys in and around the tunnels to encourage activity Multiple tunnels can be connected to make large mazes and obstacle courses	View on Amazon
	Castle	Purrini Cat Playhouse Customizable design, which allows you to get creative and use your imagination to create fun, new structures each week Sturdy construction withstands active play Provides exercise and entertainment as cats climb, explore, hide, and chase each other through, over, and around it Hide catnip, kibble, or health treats inside, and play with teaser toys in and around it	View on Amazon

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10. Stop Food Stealing Among Cats

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If you have multiple cats and one of them eats more than their share, feed them in separate rooms and then remove any food that has not been eaten. Competition for food can also cause overeating, as one cat may eat as much as possible to keep it from the other cats. If food bowls are distributed throughout the home, rather than having them next to each other, they may start to eat a more normal quantity of food. 

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Another excellent solution is microchip-activated bowls, such as the SureFeed Microchip Pet Feeder, which provide the perfect solution for keeping cats a healthy weight as they only allow access to the cat whose microchip is registered to the bowl. 

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SureFeed Microchip Pet Feeder

• Only allows the cat whose microchip has been registered to eat from the bowl
• The RFID collar tag can also be used instead of a microchip
• Perfect for multicat households
• Prevents food stealing
• Helpful if cats are on different diets

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Summary: How to Prevent Your Cat From Becoming Overweight

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• Invest in reliable and comfortable digital scales to use at home, such as our favorite Beurer Digital Scales for Pets.
• Monitor your kitten's weight using evidence-based charts to ensure they are on track for healthy growth.
• Monitor your cat's weight and body condition score once a month and take action if they're trending upwards.
• Feed your cat a suitable diet for their life stage (formulated for growth in kittens and maintenance in adults) and activity level (low-calorie diets, such as Royal Canin Appetite Control, for those prone to weight gain).
• Use our Cat Food Calculator to estimate the amount of food to feed, but be prepared to adjust it based on their monthly weight and body condition score checks.
• Always measure the amount of food to feed using accurate digital scales, such as the affordable and reliable Amazon Basics Digital Food Scales, as using a cup is imprecise. 
• If you feed treats, you will need to provide less of their main diet, and treats should not comprise more than 10% of the daily calories (use our Cat Treat Calculator to find out how many treats your cat can have a day).
• Spayed/neutered cats are prone to weight gain, and the amount of food fed will need to be decreased by 10-30%, or consider diets formulated for fixed cats, such as Royal Canin Appetite Control Spayed/Neutered for adult cats and Royal Canin Spayed/Neutered Kitten for cats less than 12 months.
• Provide enrichment and daily exercise by using puzzle feeders (our favorite is the Trixie Activity Fun Board), fishing rod-type toys (we love Da Bird), clicker training (the Cat School Clicker Training Kit contains everything you need to get started), going on walks on a leash and harness (the Kitty Holster Harness is comfortable and difficult to escape), or providing an indoor exercise wheel (we love the Star Cat Wheel that has an inbuilt luminous fish to chase).
• Create indoor play areas using large cat trees (we love the tall and sturdy IMUsee 68 Inch Cat Tree), wall-mounted shelves (our favorite being the beautiful, multi-leveled Wall-Mounted Gardens Set with planters for cat grass), tunnels (the Pawaboo 5-Way Tunnels are really fun and can be linked together), and playhouses (our top pick is the customizable Purrini Cat Playhouse).
• Use microchip-activated bowls, such as the SureFeed Microchip Pet Feeder, to prevent food stealing.

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If My Cat Is Overweight, How Do I Help Them With Weight Loss?

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If your cat is overweight, weight loss involves:

• Establishing your cat's target (ideal) weight
• Determining the correct amount of calories to feed for weight loss
• Increasing activity and exercise
• Monitoring your cat's weight
• Adjusting the plan as necessary

For more information, read our highly effective Weight Loss Diet Plan for Cats and 14 Reasons a Cat May Be Overweight.

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