r/dechonkers • • Jun 05 '26

Dechonkin The Big Fat Guide to Dechonking!

88 Upvotes

Hi all! I’m a vet nurse that is passionate about weight in animals. I run my own weight loss program for my patients in my clinic and thought I would spread the love by sharing my dechonking guide to help all of you hardworking pawrents!

**BEFORE DECHONKING it is advised that you have a general health check with your veterinarian to rule out any health issues and to ensure that your pet is healthy enough to undergo a dechonking program*\*

**This dechonk guide is not a replacement for veterinary care or advice *\*

What is an Ideal Weight in Animals?

The most accurate way to ascertain an ideal weight is by use of a Body Condition Score (BCS) chart.

At ideal weight your dog or cat should look like an hourglass when viewed from the top. Their abdomen should tuck into their legs when viewed from the side. You should be able to feel their ribs - the way that this feels is like the back of your hand.

You should make a note of your animal's BCS and their number weight before starting a weight loss program.

How to Dechonk Your Chonker

The key to weight loss in animals is diet. Exercise counts for very little in weight loss, much like in humans.

Step One: Use a Calorie Calculator to calculate your animal’s daily caloric allowance.

You will need to know their BCS and their weight to use the calculator. You can ask your local vet to weigh and assess your animal if you are unsure.

Step Two: Calculate the calorie content of ALL the foods you are feeding your animal.

You then need to find out the calorie content of everything you are feeding your animal. Calorie counts can typically be found on the back of the package of commercial foods. If you cannot find the calorie content, a calorie content calculator can help you work it out.

If feeding raw or homemade, you will have to input/search the ingredients for their calorie content much like you would if you were on a human diet!

Step Three: Make a Meal/Diet Plan based on the calorie allowance

You then need to calculate how much to feed based on the calorie content of the food you are feeding. If you are feeding a mixed diet (eg commercial dry and commercial wet food) you'll need to think about what ratios you would like to feed your animal and calculate appropriately.

When your animal reaches ideal weight, it is a good idea to plug in their stats again so you can get a calorie count for maintenance and not for loss. I also recommend a weigh in every two weeks and then monthly to assess progress, and to monitor their body for any changes against the BCS chart as they progress!

Example: Garfield is an 8kg/17lb cat with a BCS of 8/9. His estimated ideal weight is 5.6kg/12lb and his calorie allowance is 201 calories per day to achieve this.

He is fed dry food (Taste of the Wild) and wet food (Fancy Feast).

Taste of the Wild is 3741 kcal/kg therefore 3.7 kcal/g.

One tin of Fancy Feast is 71 calories.

We can feed one tin of Fancy Feast (71 cal) and 35 grams (130 kcal) of Taste of the Wild daily.

When he reaches ideal weight, the calculator suggests that he can maintain on 255 calories, so he will need a reassessment of his diet when he reaches ideal body condition and weight.

Strategies to Help with Dechonking

Dietary & Feeding Recommendations

  • Prescription 'diet' or 'metabolic' food can be helpful for weight loss but is not a strict necessity. Prescription (dry) food tends to be calorically lower than regular commercial dry foods (which in and of themselves are extremely calorie dense) which means you can feed a larger volume-to-calorie ratio. BUT you DO need to be careful that you still adhere to a calorie allowance and measure the food out every time.
    • I would take a pass on diet/metabolic WET foods as commercial wet food is already quite low in calories and shouldn’t make a significant difference in terms of weight management or volume for calorie ratio.
    • If you don't have systems in place to control the intake of food, your pet will still get fat on metabolic food. Metabolic food is expensive and if it doesn't make a difference then you might as well go back to your regular food. Simply getting a low calorie food but sticking to the same old habits is not enough. Learning to properly portion food, limiting access to situations where your animal could gorge, controlling and mitigating for begging, providing enrichment and teaching the animal a ‘new normal’ of an appropriate volume of food are the foundations of good weight loss and weight management.
  • Commercial dry food is MUCH higher in calories than wet food. Feeding more wet food and reducing dry food can assist in weight loss and keep your animal satiated.
  • Invest in an automatic feeder for cats. An automatic feeder (set somewhere away from you/your bedroom!) can do wonders as the cats will bother the feeder for food, and not you.
  • Keep cats indoors. Outdoor cats tend to get fed by well meaning strangers! If unable to keep your cat indoors, invest in a (breakaway) collar with a tag that specifies they're on a special diet/not to be fed.
  • Healthy low calorie treats for DOGS are veggies such as carrot & zucchini. You can replace their normal treats with pieces of carrot or zucchini or other safe, low calorie fruit and vegetables.
  • Healthy low calorie treats for CATS are wet food puree type treats in a tube. Inaba Churu treats are 6 calories per tube. Fancy Feast Puree Kiss treats are 4 calories per tube. Applaws Puree Treats are 2 calories per tube.

Mental Stimulation & Enrichment

  • Invest in puzzle toys, slow feeders, food dispensing toys to moderate feeding. This will keep your pet enriched, mentally stimulated and busy while slowing down their rate of eating, which is good for pets that guzzle their food then ask for more. Frozen wet food in a Kong or Toppl is one of the best low-calorie ways you can use food for dogs to promote mental enrichment and weight loss. You can even just freeze wet food and kibble in their bowl and it will provide more stimulation than just feeding them out of it.
  • Invest in enrichment as a reward for your animal, not food. This can be playtime, pats, or trick training to keep them occupied and to redirect begging!
  • Redirect & replace begging behaviour by trick training. Most begging behaviours have been inadvertantly reinforced by you - if you have always given your cat food when it screamed at you, that's what you have trained your cat to do. Food motivated dogs can be easily trained to work for food, and yes cats can be trained too!

Multi Pet Households


r/dechonkers • • 5h ago

Dechonkin Our girl’s weight loss journey

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137 Upvotes

Our sweet Kali was given to us last year. Someone we know got dogs that used to mess with her and she would just hide in the closet and wouldn’t leave. I don’t know how long it was but she gained a lot of weight during that time. Ever since we got her we have given her lots of love and patience. She was extremely nervous (still is) but she has become attached to my hip and fully trusts me which I couldn’t be more grateful for. We got her on a feeding schedule, play with her and now that she is roaming the house freely she’s lost a lot of weight. She’s still got some ways to go but I feel like she’s so much happier now and it shows!


r/dechonkers • • 9h ago

Dechonkin This idiot is refusing to lose weight (more info in caption)

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76 Upvotes

Okay so this is Boris. He is me and my boyfriend's cat that we adopted from the streets, he got rapidly overweight over the course of about 2 years (they were feeding him however much he wanted) and is currently at a bit above 7kg. We have been to the vet with him, got him his shots and a checkup, got his chip put on our name, and he is now on prescription food since about the beginning of July. He hasn't lost any weight??? He isn't gaining any weight either but obviously this seems very unhealthy for me

Some additional context:

He is 11 years old and neutered. He and his sister were originally my boyfriend's neighbours, but they moved to the US and simply left the cats there (We're from Europe). My in-laws decided to take him and his sister in when they started showing up in their garden, this was about two years ago, and we officially adopted him in july. His family had never owned any cats before, and neither had my boyfriend, so they were clueless. Me and my boyfriend do not live together yet as we're both students with a limited budget, but we decided that when we do move in together we will be taking both cats with us to give them the care they need. Veterinary budget is not necessarily a problem because his parents are willing to pay for it, but they also don't seem to be taking it very seriously. (Boyfriend does take it very seriously and monitors it as best as he can when I'm not around)

He is currently on 50 grams of Hills metabolic cat food, which he gets in 2 portions in the morning and evening (so 25grams in the morning and then again in the evening). I'm wanting to get additional blood work done, but we'll have to convince my boyfriend's parents to take him, and in the meantime I wanted to see if anyone here has experienced something similar and had any advice


r/dechonkers • • 8h ago

Advice Help weighing my cat

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12 Upvotes

My new foster cat is refusing point blank to get on the baby scales I brought for him.

We tried weighing ourselves holding him but it wasn’t accurate enough and made it seem like he has lost 2 kg, which would put him at 6.4kgs which is absolutely not…


r/dechonkers • • 37m ago

Dechonkin Everyone keeps calling my cat fat, but I feed her so little. What am I supposed to do?

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• Upvotes

I feed her 1/6th cup of kibble in the morning, and another 1/6th cup in the evening

Here is the kibble i feed her, its even less than the bag recommends.

https://www.amazon.com/dp/B0848L7KXZ

I also give her one churu per day before i leave to go to work

and every 4-5 days or so i will give her one can of wet food instead of the kibble.

https://www.amazon.com/dp/B0169J3ANO

She is pretty active, she loves to sprint from one side of my room to the other.

She is 2.5 years old

She weighed 11 pounds when i last took her to the vet 6 months ago

I tried weighing her just now and it showed 12 pounds but it was on a human scale so idk how accurate it is

Am I doing something wrong? everyone's reaction when they see her is that she is fat and it is frustrating.


r/dechonkers • • 1m ago

Dechonkin How do I get my 8 year old chonk to play?

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• Upvotes

My chonk gained a lot of weight when my dad convinced me he was underweight and I should free feed him at a year old. Big mistake. Lasted for a month before I noticed the damage and he started bad begging habits. Seven years later, my husband trips over him on the way to the food bowl and the little guy tears an ACL. Gains even more weight on crate rest.

We have another cat who has bad allergies, and my husband has contact reactions to gluten/wheat, so we can only feed them Science Diet Food Sensitivity, either duck or rabbit. So, my next thought is exercise.

While our other cat is a toy hunter, he is not. He will chase her to bully, and is a really good mouser if they get in the house, but it is really really hard to get him to engage with a toy. I can pick him up and snuggle him for a while, which he loves, but I know that doesn’t get him an exercise. As he has a bad leg, Im trying to find some gentle exercise for the boy. He has been able to run, and has been able to climb the cat tree, but I dont want to push it.


r/dechonkers • • 1d ago

Smudge had his official weigh-in and he’s gone from 21lbs to 18.5lbs in a year!

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210 Upvotes

Still at least the same amount to go (aiming for around 15lbs) but we’re very proud of him!


r/dechonkers • • 1d ago

Dechonkin My Cat's Dechonking Journey

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985 Upvotes

Just wanna share my cat Mamacat’s dechonking journey!

She went from 7.45 kg ≈ 16 lb to 5.38 kg ≈ 12 lb in about 5 years. Yes, it took that long haha! So, for anybody out there with a slow dechonker, there is hope!

(She doesn’t weigh 0.00 kg, as shown on the scale. I used the “tare” option.)


r/dechonkers • • 1d ago

Dechonkin Rogue, been with me sence birth.

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449 Upvotes

My son here used to fit in my hand, he held at 23 lbs for a long time and when he got neutered he slowly climbed up to 36lbs. He's been on a strick diet for a few months now and lost 6 lbs. Sence his weight loss journey began ive seen him become more playful with his brothers but he's learned to demand food every time someone stands up. Might be able to take the fat off of him but sure as he'll not out of him.


r/dechonkers • • 19h ago

Can/when should I swap my cat off her diet food?

3 Upvotes

My overweight cat who was formerly 16ish pounds, is now down to 12 with a vet-set goal weight of 11 (she’s just a big girl) and I’m wondering if/when I should swap her off the diet food and back onto regular food.

I currently have her on the Purina One weight management wet food, but she is a very picky lady and is getting bored of it. I also have her getting one of three meals a day with the Purina One indoor dry food for some variety. She has slow feeders and we regularly do the dry food in some sort of puzzle, but she just boycotts the wet food. She’s 9 going on 10, so I want to keep her on a mostly wet diet because I’ve formerly had cats that developed kidney issues because of dry food later in life.

Just wondering if anyone else swapped their cat to a regular wet food after they reached their goal weight!


r/dechonkers • • 1d ago

Dechonkin Meet Lua!

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116 Upvotes

This is my cat Lua. Over many years he became obese and I really want to get him own to a healthier weight. Right now he is about 22 pounds and that has been his average for the last many months to a year. I have 4 cats and they all free feed on dry food that's out 24/7 and get wet food meals in the morning and at night. He's the only one who is "overweight" of them all.

I'm hesitant to switch them to scheduled feeding, though I know this is going to be the only way I can portion control with him as I have other cats. Has anyone else successfully switched from free feeding to scheduled feeding? How difficult was it? I'm only worried that they won't eat enough when I offer food, or they'll become desperate for food.


r/dechonkers • • 1d ago

Dechonkin Bear is on a diet!

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38 Upvotes

r/dechonkers • • 1d ago

Cat doesn't like urinary food

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0 Upvotes

r/dechonkers • • 2d ago

Discussion 3.5 years Male 11.5 lbs, ideal was 9 lbs when i adopted him 8 months ago. His usual cals were 220, currently 165. Suggestions?

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88 Upvotes

r/dechonkers • • 1d ago

Dechonkin Good Pet insurance

3 Upvotes

My cat weighs 30 pounds and is 2’9” long from nose to tail. Is there a good pet insurance that would ensure him at this weight? I want him to start on a healthy regimen. (I wanted to add some pictures, but I didn’t see where to add them.)


r/dechonkers • • 2d ago

Does my 5 month old kitten look overweight? Is this considered a pot belly or a normal belly?

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239 Upvotes

r/dechonkers • • 2d ago

Dechonkin Plateaued 2.5lbs above goal weight :/

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143 Upvotes

I have a vet checkup next week but felt like posting for any ideas you all think I should run by the vet

Biggie Smalls has lost 8lbs since I adopted him in 2024.

Initially weighed 25lbs, was low energy and snuggly. He regularly failed to jump from couch to cat tree/jump onto counters and would scrabble or hang like Mufasa.

He has been on the same diet of 1.5oz wet food + 4oz/.5 cup dry food a day totalling 240 calories, split evenly into 3 80calorie meals at morning/evening/bedtime.

s diet hasn't changed since I adopted him and made a plan with the vet.

Now he is 17.5lbs.

Much higher energy, he's rapidly become a chaos goblin who loves his toys and playtime. He now is constantly on counters/leaping around and getting into trouble.

At his last check up in March he was 18lbs even.

His goal weight is 15.6 pounds (he is a large boy)

Since then he's lost 1/2 a pound only, and thats still not consistent as his weight fluctuates based on his water intake/if he pooped.

We exercise/play as often as I can and he still plays with his chase/bat/kick toys on his own/at 3am when im trying to sleep.

Any suggestions?

He's got normal wet food/dry food (not diet).

My only thoughts would be

1) possibly getting a prescription wet/dry food. Im starting a higher paying job in a few weeks so it *should* be doable in the new budget

2) increasing ratio of wet food: dry food? It seems wet food is better for weight loss and more easily consistent in weight/calorie count than scooping dry food.

3) change how often he eats? I know bodybuilders eat many small meals so maybe by the opposite logic, big breakfast + dinner is better for weight loss than 3 smaller meals?

My main thing is I just am concerned for his calorie intake to go too much lower based on all the online calorie and diet calculators plus the one the vet used. Im super paranoid about organ issues if he loses weight too fast.

Also thats how he looks currently.

Still quite a chonk. Standing up thoigh he looks closer to normal shaped from above with visible hips but still a noticeable belly round. But when he lies down all that flab and excess skin melt around him like butter

​


r/dechonkers • • 2d ago

Needs to lose weight but always hungry

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28 Upvotes

r/dechonkers • • 3d ago

Dechonkin Officially diagnosed as chonker

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81 Upvotes

Vet told me to be careful about her weight after her spay, and I feel like such a bad owner, even though I'm careful with her food. She's also pretty playful and moves around a lot.

Vet advised me to switch to adult's food after her spay. I've switched her kibbles to Purina Sterilized Indoor Cat a week before her spay, though she rarely even ate all her kibbles in a day. She also gets a bit of wet food, and switched to Whiskas, but maybe it's not that good. I'll see now that I've changed to adult diet, and she's all healed, I'll probably start calorie counting too.


r/dechonkers • • 3d ago

Progress Is she done dechonking?

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166 Upvotes

She has a pouch but swipe for the above view. We used to really struggle with her weight because our roommates free fed their cats so we couldn't stop her from eating it. But our roommates started putting their cats on a schedule and we got better at checking with each other to make sure she hadn't already been fed and she's much thinner than before. Does she look like this is the size to stick with to you? Any tips for switching to maintenance calories?


r/dechonkers • • 4d ago

Dechonkin Woody and Stitch progress

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112 Upvotes

Wanted to share their progress, since today was vet day. Ive been keeping notes of at home weight ins and this was their personal progress. I worry about Woody especially (the white and black one). We were free feeding them and it was a whole mess. We have switched to purina pro plan vet diet food and about a 1/4 of smalls weiggt food. That gets split into multiple meals through the day.


r/dechonkers • • 3d ago

Discussion How to weigh when weight fluctuates through the day?

1 Upvotes

Hi all. My cat Missy is 12 years old and diabetic. She currently is about 0.5kg overweight. I've been trying to get her to lose weight very slowly due to her diabetes. It's a bit of a balancing act as the less she eats the less insulin she needs.

The problem I have is that her weight fluctuates quite a lot through the day. For example - I weighed her yesterday after her morning meal and she was 4.5kg. weighed her two hours later after she had been for a wee and she was 4.32kg. How can I make sure she's losing weight gradually when there are so many fluctuations in a day? Thank you


r/dechonkers • • 4d ago

Is Li Bai Chonky?

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112 Upvotes

This is Li Bai. Sometimes I feel he is normal, sometimes chonk, sometimes obese. He is about 15.5-15.7 lbs and luvs food. Here are some photos of him over the last few months.

dechonk?


r/dechonkers • • 4d ago

Best Microchip Feeder​ to get ?

3 Upvotes

Anyone have any recommendations for a good microchip cat feeder brand or model? I have one cat who needs a more controlled diet in a multi-cat household. Would love to hear your advice! Thanks <3


r/dechonkers • • 5d ago

Pumpkin carving time?

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153 Upvotes

Hi everyone!

This is my big boy Pumpkin. He’s a 4-year-old domestic shorthair weighing 15.4 lbs (7 kg). Does he need to be dechonked, or is he just a big boy?
He eats about ½ a can of Fancy Feast pâté (he hates wet food) and ½ cup of Purina dry food daily, from what I read it’s well within the calorie limits. He’s fairly active and constantly asks to play since I work from home.
Would love your thoughts! ❤️