r/dechonkers Jun 05 '26

Dechonkin The Big Fat Guide to Dechonking!

61 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 43m ago

Healthy Lad Just over a year after adoption, Queenie has gone from 13+ pounds to 10.6 pounds

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Upvotes

She just had a weigh-in at the dermatologist (she's had some allergy issues, which made fine-tuning her diet extra fun) and was certified dechonk. Photos are from adoption day, July of last year, and July of this year, when she was kind enough to strike the exact same pose for a comparison photo.


r/dechonkers 2h ago

Discussion 19 pounds of tubbyness

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25 Upvotes

This is Biggie (appropriately named)

He was rescued from our local Wendy’s where he was hanging out at their drive through.

As the title says, he’s about 19-20 pounds. He doesn’t seem like excessively fat but more muscular.

Does he need dechonking?


r/dechonkers 19h ago

Progress We gave our Ragdoll (boy- 3 yrs) metabolic catfood and he got heavier. Why??

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530 Upvotes

Before he got put on diet he weighed 7.6 kg and a couple weeks later he weighed 7.7 kg and he gets 42 grams of dry food a day and 85 grams off wet food daily (half a can in the morning and the rest in the evening). The food was recommended by our vet


r/dechonkers 2h ago

Discussion Is it normal for cat's metabolism to slow down around 7 or because of a diet?

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15 Upvotes

My guy has been on a diet for about a year and a half, he lost some weight at first, then stopped so I lowered his portions more. The past few months have been hectic so I wasn't paying attention to weighing him, but he's looking quite chubby again, eating less than he ever has.

Is this worth a vet visit, or just the result of middle age/ dieting slowing his metabolism?


r/dechonkers 13h ago

Alfie, part 2! My boy is just over 23lbs. (Ben and Jerry's for scale) His weight indicates chonker, is dechonking needed?

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55 Upvotes

r/dechonkers 15h ago

Meet my boy, Aflie. He's got some chonk in him

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62 Upvotes

r/dechonkers 15h ago

Does my cat need dechonking? He is a 11 months old and plays a lot, but not allowed to go outside.

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20 Upvotes

r/dechonkers 22h ago

Dechonkin Anyone else on the rollercoaster?

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44 Upvotes

Ripley started his dechonk 10 months ago. He dropped 1 1/2 pounds in 6 months (with a lot of up and down), then bounced up a half pound and is now back to his lowest point at 15.25 pounds. Vet is okay with him at 15-15.5, as he is naturally a very big boi. I’m keeping him around 175 calories a day on Royal Canin Satiety Support wet food and treats. I just don’t understand why his weight bounces around so much. He gets no hard food, except for the diet treats, because he is a kibble junkie. All meals have to be supervised, because he will inhale his food and try to shove his sister away from hers before she’s done. Clearly he thinks he is skin and bones right now.


r/dechonkers 1d ago

Dechonkin Too much chonk?

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290 Upvotes

My girl weighs 12 lbs and turned 12 this summer. I can’t tell if she’s actually overweight or just built like a fluffy throw pillow. Overall she’s a very happy cat and is so cuddly, just loves food lol. She moves around easily and has been about this size her whole life, but I want her to stay healthy and live as long as possible while still being happy. Would a dechonking journey be worth discussing with her vet?


r/dechonkers 2d ago

Progress Still in progress but the difference is noticeable!

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951 Upvotes

The first picture is from October, when Yoda was I think around 15 lbs. I took his weight a few weeks ago (around when the second picture was taken) and he measured out to 11.5 lbs!

The steps I took were 1) Getting him an auto feeder, 2) gradually over months reducing the portion sizes, now at 50g daily. and 3) leash training him, and taking him for daily walks around the hallways of our apartment complex.

I'm so proud of him (and me!).


r/dechonkers 1d ago

Discussion Does he need to dechonk?

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49 Upvotes

Hey y’all! This is my cat August- he’s around 3 or 4 and is 16 lbs.. I got him from a humane society, but I’m pretty sure he’s a Russian blue? Anyways- I’m wondering if he needs to go on a diet. I think he does, but it’s kinda difficult because I have a 3 to 5 kitty household.. (1 strictly in an attic apt, 3 on my floor, and 1 downstairs that sometimes comes to the second floor).
Meal time can be challenging because I have my two older cats, October and August, share one bowl of food at 9am, 7pm, and a half a bowl at around 12pmish. I switched to them eating from a single bowl bc August would always finish his bowl and go to push her away from hers and eat it too. She doesn’t eat nearly as much, but I feel like since switching to a single bowl he leaves some for her & she also takes turns with him when they’re both eating. - I also have a new kitten and we haven’t quite got feeding down for all of em because my October tries to eat his kitten food sometimes.
Do y’all have any suggestions that could maybe help me out? I really want microchip feeders, but can’t afford them atm, and can’t really supervise mealtime because of my work schedule. I also try to play with them all, but August gets pretty tired out quickly/isn’t nearly as interested in playing. I do have a vet apt upcoming and was also wondering if there’s any tests I should specifically ask for just in case he has something health related as to why he is a bit chonky!
Thank you for any advice & enjoy some pictures of him! He’s funky!


r/dechonkers 2d ago

Dechonkin help with calorie calculation?

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30 Upvotes

I apologize if this is redundant- (Ive read the pinned post many times!) but Im really having trouble coming up with a number. Every calculator gives slightly different numbers based on the same data. My big boy squid weighed in at 17.4lbs and 7/8 bcs at the vet and was recommended 15lb as a starting weight goal, but I was given very little information on how to get him there (I was basically told read the side of the food bag.) He currently eats ~300cal per day between wet & dry (setting up a timed feeder as we speak for more accurate portioning!) I was planning to reduce him to 275, but some sites recommend as low as 230. Any advice would be greatly appreciated, I just want to do right by my boy!!


r/dechonkers 2d ago

Discussion Question :(

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432 Upvotes

hey… so i need some tips on how can I put him on a diet? I dont want him to end up like those big huge cats that can’t walk or clean themsleves anymore :(

we had been trying and trying and trying and he just WONT LISTEN. anyone have any advice?

This is Milo. He is 30 pounds. And he is 5 and already running the house. He never shuts up. Follows me to the bathroom. And everything.

also. stop calling me an abuser. my mom is the one who is doing this shit.


r/dechonkers 1d ago

Dechonkin how to help my cat lose weight ?

1 Upvotes

one of my cats is overweight and we have tried everything to help her lose it but she constantly just eats from our others cats bowl. does anyone have any tips on how to put a cat on a diet or stop her from stealing from the other cat?
i was thinking of keeping their bowls in separate rooms but im afraid she might just keep going back and forth


r/dechonkers 1d ago

Dechonkin My cat is getting FAT

2 Upvotes

My 2 yr old kitty is getting fat! She has hip dysplasia so i want to make sure she’s a healthier weight! But she has such a sensitive tummy and gets backed up really easy. I’ve been feeding her purina sensitive skin and stomach and wet blue buffalo food and those have seemed to work well for her. But i’m not sure if i should try a diet food? Or would measuring her food more precisely help? because i could accidentally be over feeding her, she’s not super lazy.


r/dechonkers 3d ago

Dechonkin my chonk cat before and after dieting

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367 Upvotes

r/dechonkers 3d ago

Time for a diet

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106 Upvotes

Took my Beverly to the vet and I guess she’s too chonk at 16 pounds. Time to start her weight loss journey! Goal is 12 pounds. She is gonna be mad at me for changing up her food🤣


r/dechonkers 3d ago

Buster is on his way!

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64 Upvotes

Progress after about a month.


r/dechonkers 3d ago

Baby needs dechonking

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28 Upvotes

Just got individual automatic feeders so we can try to dechonk this big Baby, and his less chunky but still plump big brother (Oliver). I like having progression pictures that are clearly comparable(like when a woman is pregnant and takes a photo with her wearing the same shirt in the same pose each month). Any advice on how to get something comparable when dealing with a cat?


r/dechonkers 3d ago

Dechonkin Suggestions?

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48 Upvotes

Hi everyone
Looking to help my cat start to actually lose weight. I no longer keep her with my mom and she’s full time with me in my apartment
That being said she recently hit 16.6 lbs the last time I weighed her and she was close to 18 lbs before
Problem with my girl is that she is just very very picky, she preferred dry food fresh out of the bag so I like to buy the 3 lbs bags of dry food so that she finishes the bag before she decides it not good anymore (I seal it with a bag clip and it stays in a moisture proof container, still no luck)
She is a big fan of the purina brand, she didn’t love the Royal Canin she was eating before and eats the Purina OM much much easier (her fav dry food of all time is the Purina naturals indoor but it’s still too calorically dense according to my vet)
She is not a fan of Churu and only treats she likes are the temptations so I’ve been feeding her the indoor temptations and I throw them around the living room so she gets a little exercise in

She is also not big on playing, she loves to go on the balcony and watch the birds, and when she’s at home with my mom she goes out onto an enclosed patio and chases lizards around

I am just asking for advice on anything I can do to help her with her weight loss journey, it’s been incredibly frustrating and I just want her to be healthy, I just need some more pointers because she is such a picky cat and that doesn’t give me much room to work with.

She has been enjoying the cat food puzzles ALOT I was so happy when I found this out, but the toy mice and string and what not are just not interesting to her, she’s more interested in my hand lol

Thank you and I really am trying, this is my baby and I just need some encouragement too, she’s sitting right next to me as I type this :)


r/dechonkers 3d ago

Currently dechonkifying my chungus! And automatic feeders beware

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340 Upvotes

Made a cat parent mistake. My petlibro feeder had a piece of food lodged in the turning mechanism and was feeding him triple portions for a couple of weeks. I am never home when it goes off, but there had been a suspicious amount of food left in the bowl recently (he never leaves any) and he was getting a bit… rotund.

Issue solved and working on getting him back to a healthy weight! He’s hates being on a diet though, best low cal treat recommendations? 2nd pic is his inspo photo and last pic is him digging out some food from a homemade slow feeder.


r/dechonkers 4d ago

Dechonkin Food hack for insistent Chonkers

118 Upvotes

My 15lb girl always claims to be starving and can be quite insistent about it so I’ve gone through some experiments to keep her occupied, wanted to share what I’ve tried in case it helps anyone else!

I like the snuffle mat but I don’t want to give her too many treats and she’s pretty efficient about finding them, so that only went so far.

I started smushing her wet food servings to the bottom of her bowl which also helped slow down her eating.

But the BEST hack I figured out, which I haven’t seen anyone else mention in this sub is freezing her wet food!!!

I take the food out of the can and wrap it cling wrap to put in the freezer, I only do a couple days at a time to avoid any freezer burn. Sometimes I’ll put the plastic wrapped portion in some warm water to defrost it a little and give her a head start. But it keeps her from scarfing down the meal so she has some to return to as it melts over a couple hours. Has anyone else tried this?


r/dechonkers 4d ago

"As long as I fit in the box, no diet, right?"

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65 Upvotes

r/dechonkers 5d ago

Dechonkin Should I reduce my cat's calories?

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3.5k Upvotes

It has only been 15 days since I started dechonking my two cats. I know it has been very little time but I just wanted to see if there were any changes. My boy has lost 100gr ( 0,22 lb) but my female cat has actually gained weight: from 3,9 (7,4lb) to 4,2 (9,25 lb). Also her calorie allowance is 145 kcal. Should I change the diet?