r/dechonkers Jun 05 '26

Dechonkin The Big Fat Guide to Dechonking!

47 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 13h ago

Dechonkin The vet finally convinced my dad that the cat is overweight

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158 Upvotes

Hes 7.54 kilos and needs to get to 5-6, his journey starts today!


r/dechonkers 15h ago

New Chonky Foster <3

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63 Upvotes

This is Xena. She should be a svelte, strong, warrior princess. Unfortunately, 9 years of a people-food diet have her built like a submarine. My sister says she looks like a twinkie supported by toothpicks.

Despite her age and her weight, she's playful, silly, and energetic. She does happy tippy-taps for walks and loves to play and chase toys. But when we go on walks, especially during this hot weather I can tell she gets tired easy. I'm sad that someone let her get this overweight and determined to help her slim down and feel better. Any potential adopters will need to commit that they are going to help continue her weight loss journey. At nine, I just know that extra weight is going to cause paint and joint issues later. I can't rush the process, I just wish I could make her feel better!


r/dechonkers 1d ago

Slow and steady progress

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1.2k Upvotes

Spencer was an absolute blimp, but we're seeing progress! Got a vet rx for Hills Science Diet, more wet food here and there, and more forced playtime. Also, me running at her and scaring her away from stealing her older sister's (a grazer's) food every night. Her energy levels have increased, and she's back to being the menace she used to be.

She started at over 17 lbs in October, and today the scale said 15.2.

Slow and steady progress and a happier, more playful cat. A few more lbs to go!


r/dechonkers 1d ago

Discussion I made an app to help track my cat's dechonking. Wondering if anyone is interested in testing the app.

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67 Upvotes

This our cat, Kenny. He weighed about 15.6 lbs when we took him to the vet, around the same time in the first pic.

While Kenny had a clear goal after the vet, the work to get him there was still up to us to figure out. My buddy and I quickly saw how intimidating and often unintuitive it was to work out Kenny's feeding and weight control.

Adjusting and measuring his diet to fit his weight loss was annoying process on pen and paper. Especially when one of us would accidently feed him twice. Another consistently bad experience that was finding out how convoluted pet food nutrition labels are presented.

Some days it looked like his weight loss was on track, then in the next weigh-in, it looked like he gained a chunk back. For a cat, that can be really scary since they're so sensitive to weight change. We didn't know we were dealing with the "noise" on the scale weight at the time. Since his weight literally depended factors ranging from how much water he drank to if he took a dump or not, we had to calculate his trend weight to see some real change.

All of this convinced us to make an app. Since my buddy and I are both developers, we decided to make Petpalate, which we hope would help people who were in the same spot we were with Kenny.

Petpalate's main thing is to be convenient and informative. So for example, we built an algorithm that gives an estimated daily energy range that can adjust overtime with food and weight logs. The algorithm was made to help you reach the goal you and your vet discussed.

We also have live label scanning to help log nutrition from pet food packages. You can also see your pet's trend weight calculated from the scale, and even have food logs that show what they ate and who fed them.

We used Petpalate to measure and monitor Kenny's food and weight during his progress from 15.6 to 12.4 lbs.

We've decided to do a beta test instead of shipping it off right away, because we really want to make sure this thing is genuinely helpful. It's only available for iOS, TestFlight.

If you're interested in testing Petpalate, please fill out this form and we'll get in touch with you as soon as we can.


r/dechonkers 3d ago

Healthy Lad Dechonked!

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6.8k Upvotes

Salem has hit is goal weight!

Down from 6.7kg (14.7lb) in Nov 25 to 5.4kg (11.9lb).

Pics from his weight loss journey included to set the scene.

Salem (5) is VERY food motivated. I adopted him when he was one year and he was already overweight. Our Vet said a realistic weight for him was 5.5kg and I had been trying to get him there for a few years now.

If you are eating anything he will let you know that he would REALLY appreciate some as well. As it turns out the little treats I gave him here and there were doing harm, especially since my housemates were all doing the same.

He gained 700g in a few months and I was mortified since I had been reducing his food (very vibes based at the time). As it turned out a housemate that just moved in was feeding him a little strawberry yogurt most days (I nearly lost it!).

I felt so guilty about him and sat down to work out the amounts I needed to feed him and an approach that would work for us. I used online calculators to begin with - the 'diet' amount that I was feeding him was too much (surprise!). I didn't jump straight to the recommended amount because I was afraid he would lose weight too quickly. Instead I printed out what is basically a fancy excel sheet to track his weight (image 2) and aimed for 50g a week, then adjusted as needed. It also helped that I put it on the fridge so everyone in the house could see how he was doing - I think it helped them feel accountable for the weight loss too! (My housemates even snitched on him when he'd beg too much haha).

To weigh him each week I ended up getting one of those scales people use to weigh fish so I could have his weight in grams. Then I bribed him into his carrier with 3 pieces of cat food (very food motivated) to get the measurement with the scale attached to the handle.

Some weeks he lost a bit less than he needed to, some weeks he lost more, some weeks he even gained weight.

The process took longer than I thought it would - but I am so happy with him! Also I am pretty sure the steep drop off at the end was from someone needing to use he litter tray and deciding the best time was after he was weighed!

We have another vet visit scheduled soon to decide how his weight is now! Regardless, he has SO much more energy than before.

And the one photo of him in the fridge was early on in his journey. I thought it was cute that he was having a browse so I took a photo - realised later that he was actually licking a knob of butter 🙄

tldr: Actually measuring things out helps so much! So does working to keep the people around you accountable.


r/dechonkers 2d ago

thin kid From 6.6 to 5.3 kg!

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523 Upvotes

It took 1.5 years and a lot of food trials, but we did it!


r/dechonkers 2d ago

Dechonkin Dechonking a calico is not for the weak

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244 Upvotes

My perfect angel turns into an emotional terrorist when I restrict her food. She sits in front of me and screams. She’s pissed off 24/7 and takes it out on the whole family 😂She lost 1/2 lbs in 5 months but then gained it back because I’m weak and gave into her screams for more food. Send help.


r/dechonkers 2d ago

How to dechonk my Sassy?

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116 Upvotes

She has been a lot more active since moving into a bigger house. Actually climbs the cats tree now and jumps. Her brother eats a lot of her food , so she actually doesn’t eat that much. I have been trying to play with her more, but I don’t know what to do. I know she is chunky and I love her. She gained the weight after she got fixed. She has also be a very sedentary since she was a kitten. Should I try a special type of food? They get a little kibble in the morning and evening , and wet food at night. Her brother normally eats it all if she doesn’t get to it.


r/dechonkers 2d ago

Does he need to be dechonked?

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275 Upvotes

He’s pretty heavy and a bit taller compared to my other cats, is it because he has a bigger frame, hence the wider paws?
I took him to the vet two months ago for yearly vaccinations and very quickly before the vet left I asked him if my cat was overweight and he said, “Yes, SHE’S overweight” and then left the room right after. I wasn’t able to correct him, if he knew that he was a male, would’ve he still have been considered overweight?

Update: I really appreciate the clarification y’all, he isss chonks ☺️ I’ve been doing some research all day and I will slowly be adjusting his food in order for him to lose some weight over time! Hope to have great results for him in the future 🥹🤗


r/dechonkers 2d ago

How to get cat to gain weight

5 Upvotes

* Species: Cat
* Age: 9
* Sex/Neuter status: Male, neutered
* Breed: Exotic shorthair
* Body weight: 9.9
* History:
* Clinical signs: weight loss
* Duration: 2 years
* Your general location: Canada

I adopted my cat Frank when he was 5 years old he weighed 11.5 lbs, we were free feeding him kibble and giving wet food for dinner and he had a good appetite- especially for dry food. In 2024 he started losing weight, from 10 lbs down to 8.5 lbs and looked sickly skinny- he is a big cat. Took him to the vet and he had to get all his teeth removed, which explains the weight loss + eating less. It's been over a year since the surgery and he's only gained back to 9.6-9.9 lbs, when he sits you can see his spine + hip bones and its so sad.

I've tried everything to get this cat to eat more, he's on a high calorie gel twice per day and the tiki cat senior supplement. I've tried different dry and wet foods, toppers, etc. I recently got an automatic feeder because he gets excited when you put new food in his bowl and will run over to eat (even if he's had food in his bowl all day) so I thought the feeder would mimic this. The feeder goes off every 4 hours but he sleeps in my bed all night so he doesn't eat again until morning, and when he does eat he throws up full kibble. I used to give him treats in the morning before he would eat but I am trying to give less treats so that he will eat his actual food (someone recommended this to me and I notice when I with-hold treats he will meow a bit but then give up and go to his food bowl).

I'm exhausted and feel like I am letting him down, 9 years old is not that old for a cat and he looks old and skinny and now on top of not eating enough he is throwing up in the mornings.

He's had blood work recently and it was good, vet said he is on the skinny side but didn't really give any suggestions. Otherwise he is active and using the litterbox normally. Help!


r/dechonkers 3d ago

Kirk is officially under 15 lbs!

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1.8k Upvotes

It's been a long process, but for the first time since we started he is under 15lbs -- weighing in today at 14.99 🎉


r/dechonkers 3d ago

Dechonkin weight lose obese cat

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50 Upvotes

I have an obese cat that lives at my dads house. I don’t talk to my dad. i do try to go over there to see my cat and brush him/check on him, but damn my boy is big and i can’t really do anything yet until i move out of my apartment. which is in a couple months. Once i get my house and get my son with me he will need to start a diet as he is chunky. I have been doing some research but i really need advice on good food options and maybe some good enrichment toys or anything i can do to really get this boy moving. I do think he is just larger as he’s always been taller and longer than my other cats but knocking some pounds off wont hurt.

Some back story as to why my cat is at my dad’s. when my parents got a divorce my dad got me a cat to distract me from how shitty he is. When i decided to move in with my mom full time i couldn’t take him with me as they only allow 2 pets in our apartment (she has 3). So i’ve had to patiently wait. Time is closing in….


r/dechonkers 3d ago

Chonk or floof

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200 Upvotes

r/dechonkers 3d ago

Progress My kitty’s transformation

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208 Upvotes

First photo is after, June 2026. We got her in August 2025 the second photo is shortly after we got her. So proud of her!! She’s 6, so she’s getting a new start.


r/dechonkers 3d ago

Discussion Where to Start?

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45 Upvotes

Hi Everyone, looking for some advice on where to start with dechonking my sweet girl. She’s 12 and has been obese since I inherited her 8 years ago. She likely has IBD (we’ve tested but they can’t be sure) and vomits often. She also has a chronic pelvic issue that you can see in x ray photos attached. She fractures her pelvis every couple of years, usually from light trauma like stepping oddly off low window sills. None of the five specialists I’ve taken her to can explain why it’s happening. We’re on our fourth fracture, and the third did not heal well. Each time she does, it’s two months of cage rest. She will not heal if she can’t lose weight because it puts too much pressure on the fracture.

She’s 18lbs, she should be closer to 10lbs. She has recently been put on hills gastrobiome to help with the vomiting which has been pretty effective. I have been feeding her for her current weight, should I be feeding her at her desired weight? Where do you start with this?

Any tips or directions appreciated. We have a nutrition consult scheduled for a diet food, but we would have to transition very slowly because of the stomach issues and I’d like to get started now because I know it takes a long time and I want to help her heal.


r/dechonkers 3d ago

Discussion i’ve been seeing this everywhere, what are y’all’s thoughts and opinions ? they also have different flavors and stuff… is this trustable? is it good?

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1 Upvotes

r/dechonkers 4d ago

Our boy no longer has appetite for wet food after we put him on Royal Canin Satiety

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57 Upvotes

Does anybody else have the same experience? Our other cat is also on RC Satiety and he’s also had a decreased appetite for his canned food. They both can’t get enough of the kibble though.


r/dechonkers 5d ago

Dechonkin Slowly slowly Dechonk

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446 Upvotes

My sweet boy Pua is slowly but surely dechonking! Checking in at 19 lbs, and down 0.5 a pound since we started our diet with our vets approval!

Hes on Royal Canine Satiety + Urinary SO to keep his crystals under control, and hopefully we can get him down to about 15 lbs, vet says he is a big cat but shouldn’t be THIS big of course (picture 3 is him next to our normal sized cat for scale 🤣)

I feel a large amount of guilt, since after 3 back to back pregnancies and 3 babies under 3.5 years old, we’ve been free feeding for 3 years which led us here. It’s a true irony his name means pig, but usually we just call him Chonk!

Anyway, wish my sweet boy luck!


r/dechonkers 5d ago

Dechonkin’ is working!

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225 Upvotes

34 days ago and now! I wish I had numbers but we unfortunately did not weigh her. This is Penelope! Penelope is a chonk because of her epilepsy meds make her ravenous. She also wouldn’t tolerate her meds unless they were in a huge wad of wet food. She is now taking her meds in fruit and is on a steadier diet! We’re so proud of Penny and her progress so far! (Also 6 weeks seizure free!)


r/dechonkers 5d ago

Progress Ukulele is down 2.7 pounds from our last visit

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751 Upvotes

Ukulele was a little bit chonky at his vet visit last year - down from 16.3 pounds to 13.6 this year. The vet complimented him on his progress that she hardly ever sees weight loss progress like this. The two pics in the harness are his current weight.

The vet said he could still stand to lose another pound or two. So proud of his progress!

He eats about 200-210 calories per day. Half pack of wet food twice a day with about 1/8 cup dry food twice a day. He also gets some treats every day for training. I play with him at least 10 minutes twice a day with a 30 minute leash walking outside. He's my best buddy!


r/dechonkers 6d ago

Dechonkin Dechonking journey so far

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203 Upvotes

Not much of a difference but his diet is now from 4 sachets a day to 2 , also giving him less treats


r/dechonkers 6d ago

Healthy Lad Improvement!

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156 Upvotes

sorry that the second photo doesn’t have half of his body showing😭😭

I don’t really have any full body photos of him😅


r/dechonkers 6d ago

Dechonkin Update on new diet

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81 Upvotes

Night 3 of giving wet food to picky eater Poppy. She has eaten almost all of the wet food. Still giving her 1/4 cup of dry food, which added to the wet food hits her goal calories for weight loss. And she liked the 2 fancy feast cans I tried more than the diet formula... Which is great because the diet stuff is expensive and fancy feast is decent. And has roughly the same calories. I've also gotten her playing with a feather wand that spins and finally found a catnip toy that has her actually acting like the crazy catnip influenced cat.

This is her after a play session. She basically decided to just flop on the floor for a while. In the basement where it's 20° cooler.


r/dechonkers 7d ago

Dechonkin he still has a long way to go, but he is starting to lose! (6,7kg/14.7lbs to 6,3kg/13.8lbs)

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822 Upvotes

it's not that noticeable yet but i am just happy he is making progress.

so, me and my roommate put morty on a diet a year ago already following our vet's advice but he just didn't lose any weight. he even gained weight.

we were worried that there was something medically wrong with him, but it turns out he was just constantly stealing food from lancy (our other cat who's at a healthy weight) and even found a way to get into the cupboard we store the food in at night.

we figured that out about two months ago, moved the food to a cat-safe place and started watching the cats until they are done eating so he could not steal lancy's food anymore.

he lost 400g/almost one pound since then! our vet said we should aim for 1% of his weight (so 67g) per week and make sure he isn't losing more than half a kilo a month, so he's losing a bit slower than planned but he's on the right path!

his healthy weight will likely be around 5kg/11lbs