Please note: This review reflects information we gathered on the date it was researched and may now be out of date. Providers frequently change their pricing, plans, medications, and policies. Any ratings, reviews, and customer feedback are gathered from publicly available online sources and may have since changed or no longer be accurate. Always do your own research and confirm the latest details directly with the provider before making any decision.
Petco Review
If your own weight loss has you eyeing the dog, the instinct is right and the execution is where people hurt their animals — especially cats.
Petco
See A Vet Before The AisleThe one thing to take from this page: safe weight loss is 0.5–1% of body weight per week for cats and 1–2% for dogs. Going faster risks feline hepatic lipidosis — fatty liver that can cause liver failure, and whose typical victim is the previously obese cat whose owner has just started restricting food. Do not apply your own experience to an animal.
The instinct is sound, though: the 2022 US Pet Obesity Prevalence Survey found 61% of cats and 59% of dogs overweight or obese, while a 2023 survey found only 28% of cat owners and 17% of dog owners recognised it. Get a body condition score, rule out medical causes like canine hypothyroidism, and leave the vet with a target weight and a daily figure in grams. Then buy the food here.
On the retailer itself, two findings. Financially it is solid — $1.16bn of equity on $5.96bn revenue for the year to 31 January 2026 — so gift cards are low risk, unlike other retailers we have reviewed. But Trustpilot sits at 1.4 out of 5 across 1,677 reviews, and the site blocked our access entirely, so we could not verify prices, returns or Vital Care terms.
Affiliate disclosure: GLP1Drugs.org earns a commission if you buy through the links on this page — 1% on this programme, so very little. Our main advice is to see a vet first, which earns us nothing. Financials are from Petco's own SEC filings; the site blocked automated access, so commercial terms are unverified and flagged as such. Verified 8 August 2026.
Visit PetcoOur Top Recommended Provider: CoreAge Rx
After reviewing dozens of GLP-1 telehealth providers, CoreAge Rx is the one we recommend most. CoreAge Rx is one of our partners — read on for why we recommend them:
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61%
Of Cats Overweight Or Obese
28%
Of Cat Owners Who Realise It
0.5%
Max Weekly Loss To Start, Cats
1.4
Trustpilot, From 1,677 Reviews
What Matters Before You Buy Anything
Six findings — four veterinary, two about the retailer.
Your Pet Probably Is Overweight
The 2022 US Pet Obesity Prevalence Survey found 61% of cats and 59% of dogs were overweight or obese. So if you have started thinking about your dog's weight, the odds say you are right
And You Probably Cannot See It
In a 2023 survey only 28% of cat owners and 17% of dog owners recognised their pet as overweight. The gap between prevalence and recognition is the whole problem, and it is why this needs a professional eye
But Cats Must Lose Weight Very Slowly
Veterinary guidance puts safe loss at 0.5-1% of body weight per week for cats and 1-2% for dogs. The pet obesity association suggests starting nearer 0.5% a week for a cat and never applying the 2% figure to one
Because Rapid Loss Causes Liver Failure
Feline hepatic lipidosis is fatty liver disease that can cause liver failure when a once-overweight cat loses weight too fast or stops eating. The typical case has lost at least 25% of its original body weight
Walking The Dog Helps You Too
Around 45% of the weight lost on semaglutide in STEP 1 was lean tissue, and activity is one of only two things that protects it. A dog that needs walking is a more reliable adherence device than any app
Financially, This One Is Solid
We flag balance-sheet risk when it exists. Here it does not: Petco reported $1.16bn of stockholders' equity and $5.96bn of revenue for the year to 31 January 2026. Gift card risk is low
Your Weight Loss Versus Your Pet's — Not The Same Rules
The gap between these rows is why applying your own experience to an animal is dangerous.
| Safe rate of loss | Risk of going too fast | |
|---|---|---|
| Cats | 0.5–1% of body weight per week; start nearer 0.5% | Hepatic lipidosis — fatty liver, can cause liver failure |
| Dogs | 1–2% of body weight per week | Muscle loss, nutrient deficiency, missed underlying disease |
| You, on a GLP-1 | Mean 14.9% over 68 weeks in STEP 1, clinically supervised | ~45% of that loss was lean tissue — hence protein and training |
A 6kg cat losing 0.5% a week is losing about 30 grams — invisible without scales. That is the pace, and it is a six-to-twelve-month project run on measured grams and counted treats, not a switch to 'light' food. If a cat on a diet stops eating, becomes lethargic or looks jaundiced, that is urgent. For the human side, our side-effects guide and provider rankings are the relevant pages.
Pros & Cons
Pros
- ✓A large, financially substantial retailer: $1.16bn of stockholders' equity and $5.96bn of revenue for the fiscal year ended 31 January 2026, per its own SEC filings
- ✓Roughly break-even rather than distressed, reporting $9.1m of net income for that full year
- ✓Unlike some retailers we have reviewed, gift cards and prepaid services here carry low counterparty risk given the size of the balance sheet
- ✓Physical stores let you have a pet weighed and body-condition scored in person rather than guessing from a bag label
- ✓Stocks veterinary therapeutic diets alongside ordinary food, so a vet-directed plan can usually be filled in one place
- ✓In-store veterinary and grooming services exist in many locations, which matters if your pet needs assessment rather than just food
- ✓Buying a dog lead, harness and boots supports the one adjunct with real evidence behind it for protecting lean mass: regular activity
- ✓Broad range means the specific low-calorie, high-protein or prescription formulation a vet asks for is usually obtainable
Cons
- ✕Trustpilot shows 1.4 out of 5 across 1,677 reviews — a large sample and one of the worst independent scores we have recorded
- ✕The site blocked our automated access entirely, so we could not verify the return policy, Vital Care subscription terms or prices at source
- ✕Because of that block, we cannot tell you the cancellation terms of any recurring Vital Care or repeat-delivery plan — check them yourself before enrolling
- ✕Our BBB search returned no profile, removing another route to independent signal
- ✕Q1 of the current year swung to a $15.1m net loss, and cash fell from $256.7m to $166.8m over that quarter
- ✕Net margin on the full year was around 0.15%, so this is a thin-margin business rather than a comfortable one
- ✕Buying a 'weight management' food off a shelf is the most common way owners get pet weight loss wrong
- ✕Nothing in a retail aisle can body-condition score your animal, rule out hypothyroidism in a dog, or set a calorie target
- ✕The commission on this programme is 1%, so a purchase here does very little for us either — we would rather you saw a vet
Our Verdict
3.3 / 5 — a solid place to buy what your vet has told you to buy, and the wrong place to decide what that is.
Petco is a large and financially substantial business, and since we have flagged balance-sheet risk on two other retailers this week it is only consistent to say that here the risk is low. Its own filings for the year ended 31 January 2026 show $5.96bn of revenue, net income of $9.1m, and stockholders' equity of $1.16bn. The first quarter of the current year swung to a $15.1m loss and cash fell from $256.7m to $166.8m, and a 0.15% full-year net margin is thin rather than comfortable — but a billion dollars of equity means gift cards and prepaid services here are not the concern they are at a company carrying a going-concern qualification. Physical stores are the genuine asset: they let a person put your animal on scales and assess its body condition, which no website can do.
The substance of this review is not really about the shop, though. The pattern we want to interrupt is the reader who has lost 15% of their body weight, looks at an overweight cat, and starts cutting its food. The instinct is right — measured prevalence is around 61% of cats and 59% of dogs, and only 28% and 17% of owners respectively recognise it. The execution is where animals get hurt. Safe loss for a cat is roughly 0.5 to 1% of body weight a week, starting nearer 0.5%, and going faster risks feline hepatic lipidosis: fatty liver that can progress to liver failure, and whose classic presentation is a middle-aged, previously obese cat that has lost at least a quarter of its body weight and gone off its food. Dogs tolerate 1 to 2% a week, and weight gain in a dog can itself be a symptom — hypothyroidism needs treating, not dieting.
So the sequence is: vet first for a body condition score, a medical work-up and a daily calorie figure in grams; shop second for whatever they specified. The one thing we would actively encourage buying is walking equipment, because a dog that has to go out twice a day is a better adherence device than any app, and physical activity is one of only two interventions with real evidence for protecting the lean mass that GLP-1 weight loss costs you. Two limits on this review: Trustpilot sits at 1.4 out of 5 across 1,677 reviews, which is poor even allowing for how negatively review platforms skew, so prefer stores to online ordering. And the site returned 403 to every automated request we made, so we could not verify prices, the return policy or the Vital Care subscription terms — read those yourself before enrolling in anything recurring, because we cannot tell you what they say.
Visit PetcoFrequently Asked Questions
Why is a pet shop on a GLP-1 site?
Because it is in our affiliate queue, and because there is one genuinely useful thing to say that we have not seen written anywhere. Petco sells pet food, supplies and services; it has no medical function for humans and no connection to weight-loss medication. But there is a pattern worth naming. People who succeed on a GLP-1 frequently look at the household around them and notice the dog is heavy too, and that instinct is correct — the 2022 US Pet Obesity Prevalence Survey found 61% of cats and 59% of dogs were overweight or had obesity. The problem is what happens next. Applying your own experience to an animal is where it goes wrong, because the physiology is not the same and because cats in particular can be seriously harmed by losing weight quickly. So this review is mostly about how to help your pet without hurting it, and its central recommendation points away from the shop rather than towards it. There is also a second, smaller point in the other direction: a dog that needs walking twice a day is one of the better adherence devices there is for the physical activity that protects your own lean mass. If you want the human content, our provider rankings and side-effects guide are the pages to read.
How fast should a pet lose weight?
Much more slowly than a person, and the numbers differ by species in a way that matters. Veterinary guidance puts a safe rate at roughly 1 to 2% of body weight per week for dogs, and 0.5 to 1% per week for cats. The Association for Pet Obesity Prevention suggests starting nearer 0.5% a week for a cat and is explicit that the up-to-2% figure should never be applied to one. Put that in context: a 6kg cat losing 0.5% a week is losing about 30 grams — a rate you cannot see week to week and can only track on scales. This is the opposite of the human experience many readers will have had, where visible change over a month is normal and encouraging. Two practical consequences. First, pet weight loss is a six-to-twelve-month project measured with a kitchen scale and a written calorie target, not a switch to 'light' food. Second, the thing that makes it work is measuring food in grams rather than scoops, and counting treats — treats are where most plans quietly fail, because a few biscuits can be a substantial fraction of a small animal's daily calories. Your vet can calculate an actual daily energy requirement, which no bag of food can do for your individual animal.
What is hepatic lipidosis and why does it matter here?
It is the specific reason not to crash-diet a cat, and it is serious. Feline hepatic lipidosis is fatty liver disease: when a cat stops eating or loses weight too rapidly, the body mobilises fat faster than the liver can process it, fat accumulates in liver cells, and liver function fails. It is one of the more common liver diseases of cats and it can be fatal without treatment. The clinical picture described in the veterinary literature is telling for our purposes: the typical affected cat is middle-aged, was previously obese, and has lost at least 25% of its original body weight, with poor appetite and often signs of gastrointestinal upset. In other words, the animal at risk is precisely the overweight cat whose owner has decided to slim it down. With appropriate treatment — which usually means aggressive nutritional support, often by feeding tube — a large majority of affected cats survive, but that is an intensive and expensive course of care that you would much rather avoid. The practical rules that follow are simple. Never restrict a cat's food sharply. Never let a cat go without eating for more than about a day without seeking advice. If a cat on a diet stops eating, becomes lethargic, or develops jaundice, that is an urgent veterinary problem, not a sign the diet is working.
Can I just buy a weight management food?
You can, and it is the most common way this gets done badly. Three reasons to involve a vet first rather than a shelf. First, you need to know whether the animal is actually overweight and by how much, which is done by body condition scoring — a hands-on assessment of ribs, waist and abdominal tuck — not by comparing it to photographs. The survey data is blunt about how badly owners judge this: in a 2023 survey only 28% of cat owners and 17% of dog owners recognised their pet as overweight, against measured prevalences around 60%. That gap runs both ways; some people put a normal-weight animal on a diet. Second, weight gain can be a symptom. Hypothyroidism in dogs is a genuine cause of weight gain and lethargy and needs treating rather than dieting; other endocrine conditions matter too. Restricting food in an animal with an undiagnosed disease treats the wrong problem. Third, the number that makes a diet work is a daily calorie target for that individual animal, which depends on its target weight rather than its current one — and no bag of food knows your cat's target weight. Use a vet to get the diagnosis, the target and the gram figure. Then buy the food, from wherever is convenient.
Does walking the dog actually help me?
Yes, and it addresses the most important unsolved problem in GLP-1 treatment rather than a trivial one. In the body-composition substudy of STEP 1, roughly 45% of the weight lost on semaglutide 2.4mg was lean tissue rather than fat. That is broadly what happens in substantial weight loss generally, and it matters because muscle underpins function, metabolic rate and the odds of keeping weight off. The interventions with real evidence for protecting it are adequate protein and physical activity, particularly resistance work — not supplements. Dog ownership is one of the more reliable ways people accumulate daily walking, because the obligation is external and repeats twice a day whether or not you feel motivated, which is exactly the property that most exercise plans lack. During GLP-1 dose escalation, when nausea and fatigue are common and the gym feels impossible, a short walk you have to do anyway is often the only activity that survives. We would not pretend a dog is a treatment. But if you already have one and you are not walking it much, that is a lever with two payoffs — and it costs nothing. Do add resistance training when you can, because walking alone does less for muscle than walking plus lifting.
Is Petco financially sound? Should I buy gift cards?
Yes, and gift cards here are low risk — and we say that having flagged the opposite for other retailers, because the method should cut both ways. From Petco's own SEC filings for the fiscal year ended 31 January 2026: revenue of $5.96bn, net income of $9.1m, cash and equivalents of $256.7m and stockholders' equity of $1.16bn. In the first quarter of the current year, to 2 May 2026, it reported a net loss of $15.1m and cash fell to $166.8m. So the honest picture is a very large, thin-margin retailer hovering around break-even — net margin on the full year was about 0.15%, which is not comfortable — but with more than a billion dollars of equity behind it. That is a completely different situation from the two other retailers we reviewed this week, one of which carries a going-concern qualification and another of which has lost roughly $98m over three years. Prepaid balances and gift cards are always an unsecured claim on a business, but the size of this balance sheet makes that claim a remote concern rather than a live one. Where we would still be careful is recurring plans: because the site blocked our access, we could not read the terms of any Vital Care or repeat-delivery subscription, so check the cancellation route yourself before enrolling.
Why is the Trustpilot score so bad?
It is genuinely poor, and the sample is large enough that we cannot wave it away. Checked on 8 August 2026, Trustpilot showed 1.4 out of 5 across 1,677 reviews for petco.com. Two things are true simultaneously, as with every large retailer. Review platforms are structurally negative: nobody seeks out Trustpilot to report that dog food arrived on schedule, and people overwhelmingly go there when something went wrong, so almost every high-volume retailer scores far below what its customer base would say. That is why we would not read 1.4 as a verdict on the products. But 1,677 reviews averaging 1.4 is a lot of people who went looking for somewhere to complain, and that is a signal about the online ordering, delivery and customer-service path rather than about whether the food is good. Our BBB search returned no profile, so we have no counterweight from that direction. The practical conclusion is about channel: buy in a physical store where you can see what you are getting and resolve problems at a counter, use the stores for the thing they are actually good for — having an animal weighed and scored by a person — and treat online ordering and any subscription as the weaker part of the operation.
What could you not verify?
Quite a lot, and it is only fair to be explicit. Petco's website returned HTTP 403 to every automated request we made, so we were unable to load the homepage, the return policy or the Vital Care pages. That means several things we would normally check are simply absent from this review: current prices, the return window and its conditions, whether returns of opened pet food are accepted, the terms and cancellation mechanics of the Vital Care membership and any repeat-delivery discount, and which veterinary services are available in which stores. We are not going to guess at any of those, and we would rather leave a gap than fill it with a plausible-sounding number. What we could verify came from sources outside the company's own site: its financial position from SEC filings, its independent rating from Trustpilot's structured data, and the veterinary facts from published survey and clinical sources. So treat this as a review of whether and how to approach pet weight management from a large retailer, not as a guide to Petco's commercial terms. Before you enrol in anything recurring, read the cancellation terms yourself and keep a copy.
Who should shop here and what should they do first?
Shop here if you have a pet and a store nearby, and use it for the two things it does well: obtaining whatever food or equipment your vet has specified, and getting your animal onto a set of scales in front of a person who can assess its body condition. Buy a lead, a harness and — if you live somewhere cold or wet — boots and a coat, because the walk you actually take is worth more than the walk you plan. Do the first step elsewhere. If you think your pet is overweight, book a vet appointment before you buy a diet food: get a body condition score, rule out hypothyroidism in a dog or other medical causes, and leave with a target weight and a daily calorie figure in grams. Then buy the food. Be especially careful with cats, where safe loss is around 0.5 to 1% of body weight a week and going faster risks hepatic lipidosis, a liver failure that most often affects exactly the previously obese cat whose owner has started restricting food. And do not apply your own experience of losing weight quickly to an animal that cannot tell you it feels unwell.
Book The Vet, Then Buy The Food
A body condition score, a medical work-up and a daily gram target are things a shelf cannot give you. Cats especially: slow, measured, and never sharply restricted.
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Read Review →Veterinary, Medical & Financial Disclaimer: This page is informational and is neither veterinary, medical nor financial advice. Petco is a retailer, not a veterinary practice, and nothing here substitutes for examination of your animal by a licensed veterinarian. Do not place any animal on a restricted diet without veterinary assessment: apparent weight gain can reflect underlying disease, and inappropriate restriction can cause harm. Cats are at particular risk — feline hepatic lipidosis can follow rapid weight loss or reduced food intake and can progress to liver failure; a cat that stops eating, becomes lethargic, vomits repeatedly or develops jaundice requires urgent veterinary attention. Weight-loss rates cited are general veterinary guidance, not a prescription for any individual animal. Human trial figures are averages from published trials in specific populations and are not predictions for any individual; consult a licensed clinician before starting or changing treatment or an exercise programme. Financial information is drawn from public SEC filings as at the dates stated, is historical, and is not a forecast, an assessment of solvency, investment advice or a recommendation regarding any security.
Date reviewed: 8 August 2026. Financial figures are from Petco Health & Wellness Company, Inc. (Nasdaq: WOOF, CIK 0001826470) filings with the SEC: the 10-K for the fiscal year ended 31 January 2026 filed 13 March 2026, and the 10-Q for the quarter ended 2 May 2026 filed 5 June 2026. Reported: revenue of $5,961,467,000 and net income of $9,066,000 for the year ended 31 January 2026; revenue of $1,496,732,000 and a net loss of $15,146,000 for the quarter ended 2 May 2026; cash and cash equivalents of $256,736,000 at 31 January 2026 and $166,804,000 at 2 May 2026; stockholders' equity of $1,164,254,000 at 31 January 2026 and $1,155,305,000 at 2 May 2026. The petco.com website returned HTTP 403 to every automated request we made, so we were unable to verify prices, the return policy, Vital Care membership or repeat-delivery subscription terms, or in-store service availability; none of those are asserted in this review. Trustpilot showed 1.4 out of 5 across 1,677 reviews for petco.com, read from Trustpilot's own structured data; our BBB search returned no profile, which we report as a failure to locate rather than as evidence none exists. Pet obesity prevalence figures of 61% of cats and 59% of dogs overweight or obese are from the 2022 US Pet Obesity Prevalence Survey published by the Association for Pet Obesity Prevention; owner-recognition figures of 28% of cat owners and 17% of dog owners are from a 2023 survey reported by the same organisation. Safe weight-loss rates of 1-2% of body weight per week for dogs and 0.5-1% per week for cats, with a suggested conservative starting point nearer 0.5% per week for cats, reflect published veterinary guidance. The description of feline hepatic lipidosis — fatty liver disease that can cause liver failure following rapid weight loss or reduced intake, with the typical affected cat being middle-aged, previously obese and having lost at least 25% of original body weight with poor appetite, and a majority surviving with appropriate nutritional support — reflects the published veterinary clinical literature including the Merck Veterinary Manual. The STEP 1 figures, including the body-composition substudy finding that approximately 45% of weight lost was lean tissue, are as published. The Katalys offer lists a default commission of 1.00%.
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