Switching from Kibble: What Goes Wrong in Week One

Switching from Kibble: What Goes Wrong in Week One

August 23, 2026 · 11 min read

Day one, your dog sniffs the bowl, looks up at you, and walks away.

Day two, the stool is softer than you have ever seen it.

Day three, you are standing in the kitchen at 7am wondering whether you have just made an expensive mistake.

This is the post we would rather you read before you order than after. Not the version where every dog dives in and the coat gleams by Friday. The version with the bad days in it.

In our experience, the people who give up mostly give up in week one, and week one is the worst possible time to judge it.

A large steel pot of simmering broth with diced carrot, green beans and a cooked grain
A large steel pot of simmering broth with diced carrot, green beans and a cooked grain

What week one usually looks like

Some dogs switch overnight and never look back. Plenty do not. The common complaints, roughly in order of how often we hear them:

  • Hesitation at the bowl, or a meal skipped outright
  • Softer stool, sometimes properly loose, for two or three days
  • More gas than usual
  • Eating fast, then looking around for more
  • One episode of vomiting, usually early on

None of that is strange when a dog moves from a dry, shelf-stable food to a wet, gently cooked one. The gut has spent years running on one thing and is being asked to run on another.

What matters is whether it settles. Most of it does, usually inside a week or so. Every dog is different about this: the veterinary nutrition team at Tufts notes that some pets change food between breakfast and dinner with no trouble at all, while others need a four to six week transition to avoid an upset stomach. Some of it does not settle, and that is a different conversation, further down this page.

Refusal usually means unfamiliar, not wrong

Kibble is built to be eaten. It is dry, crunchy, strongly scented, and coated with fats and palatants after cooking precisely so dogs will take it. Fresh food is soft, wet, cool out of the fridge, and smells like food rather than a snack. A dog who has eaten the same brown biscuit for six years is entitled to be suspicious of that.

Two things are worth trying. Serve it at room temperature rather than straight from the fridge, so take the pouch out about fifteen minutes beforehand. Dogs lean heavily on smell when they decide whether to eat: in palatability trials they consistently eat more of the sample they picked by sniffing, before they have tasted anything. Aroma carries better off warm food than cold, though we should be honest that the direct serving-temperature research has mostly been done in cats, where food warmed to body temperature won on preference. Treat it as worth trying rather than settled science for dogs.

Then put the bowl down and walk away. Fifteen to twenty minutes is the window the American Kennel Club's chief veterinary officer suggests: if the food has not been touched, pick it up and offer nothing, treats included, until the next scheduled meal. Standing over the bowl coaxing, then topping it with something tastier, teaches a dog one lesson very fast: hold out, and a better offer arrives.

It feels harsh the first time. A healthy adult dog missing one meal is not an emergency. A healthy adult dog who has learned that refusing dinner produces chicken off your plate is the harder problem. An appetite change that runs past twelve to twenty four hours is a different matter, and that is when you ring the vet rather than wait. If your dog is a puppy, elderly, very small, unwell or on medication, ignore all of this and speak to your vet before you let any meal go by.

Loose stool: three things to check before you blame the food

You moved too fast. Seven to ten days is the honest pace, and at least a week is the general veterinary advice. Start at roughly a quarter fresh mixed into the old food, move to half, then three quarters, then all of it. This is not folklore: in a controlled trial in puppies, a week-long stepped transition produced firmer stools than an abrupt switch to the same food. If the stool loosens at any step, hold at the last ratio that was fine for an extra day or two instead of pushing on.

You are feeding too much. A common cause, and an easy one to miss, because fresh food is not measured the way kibble is. Our published starting point for a healthy adult on Chicken & Rice is about 475 g a day at 10 kg and about 805 g a day at 20 kg, split across two meals. Puppies eat close to double for their size, most of all in the early months, when their energy needs run far above an adult's. That is a starting point and not a rule, so if the stool is loose and the dog is gaining, come down.

Handling. Our food has zero preservatives, which is the point of it and also the catch. Refrigerate within two hours of delivery. An unopened pouch keeps three to five days in the fridge and a month in the freezer, thawed overnight in the fridge and never on the counter. Once open, use it within twelve to twenty four hours, and never leave a served bowl standing more than two hours. The two hours is not a number we made up: it is the standard food-safety limit for perishable food at room temperature, and counter thawing is discouraged for the same reason, because the outside of the food sits in the bacterial growth range long before the middle is defrosted.

What is not week one

Some things are not adjustment, and waiting them out is the wrong instinct. The MSD Veterinary Manual puts vomiting or diarrhoea lasting more than 24 hours, failure to eat or drink for 24 hours, heavy bleeding and extreme lethargy in the see-a-vet-immediately column, which is where we would draw the line too:

  • Repeated vomiting, or vomiting that carries on past 24 hours
  • Blood in the stool, or diarrhoea still going after 24 hours
  • A dog who is flat, off water, or clearly uncomfortable
  • Any dog refusing food and water for 24 hours
  • Anything at all in a puppy, a senior, or a dog with a known condition, where the threshold for phoning should be far lower

We are not vets and we will not guess from a WhatsApp message. If your dog has a diagnosed condition, the diet is part of the treatment and it goes through your vet. On our side, therapeutic recipes are formulated by our canine nutritionist to work alongside a vet's plan and never in place of one. We cook one for a dog called Mocha on exactly that basis. It is not a menu item.

Why people quit on day four

Week one is the only week where all the effort is front-loaded and none of the reward has arrived. You have rearranged the fridge, you are weighing out grams, and the dog is producing worse stool than on the old bag. It is a reasonable moment to decide this was a mistake.

Ten days done properly tells you far more than four days done anxiously. And if you do switch back, go gradually on the way out too. The same logic applies in reverse, and an abrupt change in either direction is the one most likely to loosen the stool.

When quitting is the right call

Fresh food is not the right answer for every household, and we would rather say so than sell you three months of guilt.

It is probably not for you if there is no reliable fridge or freezer space, if your dog often stays with people who will not follow the handling rules, or if you travel enough that pouches will sit past their window.

On cost, do the sum at full list price rather than the introductory one. The weekly plan is 10% off for the first three months and the monthly plan is 20% off for the first full year, and both of those end. Work out what month four costs before you commit, not month one.

And if your dog has had a fair, gradual trial and still does not do well on it, that is real information rather than a failure. A good kibble your dog thrives on beats a fresh diet you are fighting over every evening.

Otherwise: go slower than feels necessary, weigh the food, keep it cold, and give the gut ten days before you draw any conclusion. If you want to talk it through first, WhatsApp us to start, or have a look at pawsitivelife.in.

Frequently Asked Questions

Frequently Asked Questions

Is loose stool normal after switching to fresh food?

Mild, short-lived softening is common in the first few days while the gut adjusts, and a slower transition usually reduces it. Blood in the stool, or diarrhoea still going after 24 hours, is not something to wait out. Call your vet.

What if my dog refuses the food?

Serve it at room temperature rather than fridge cold, leave the bowl down fifteen to twenty minutes, then take it away until the next meal instead of leaving food out all day. Most hesitation is about unfamiliar smell and texture. If a healthy adult dog's appetite has been off for more than twelve to twenty four hours, speak to your vet.

How long should the transition take?

Seven to ten days for most dogs, and at least a week is the usual veterinary advice. Start at about a quarter fresh and raise the fresh share every couple of days. Older dogs, sensitive stomachs and dogs coming off a very different diet may need longer, in some cases four to six weeks, and there is no prize for finishing early.

How much should I be feeding?

Our published chart is the place to start: for a healthy adult on Chicken & Rice, roughly 475 g a day at 10 kg and 805 g a day at 20 kg, split across two meals. Puppies eat close to double for their size, most of all in the early months. It is a starting point, so adjust to the dog in front of you.

My dog has a health condition. Should I switch?

Ask your vet before you change anything. Therapeutic recipes on our side are formulated by our canine nutritionist alongside a vet's plan rather than instead of one.

Sources

Feeding amounts, pouch storage windows and plan pricing are Pawsitive Life's own published figures. Everything else above leans on the following

Insights to Study, Understand and Manage Extruded Dry Pet Food Palatability (Animals, via PubMed Central), on fats and palatants being applied as a coating after extrusion, and on odour driving food choice (read it)

Measuring palatability of pet food products: sensory components, evaluations, challenges, and opportunities (Calderon et al., Journal of Food Science, 2024), on dogs eating more of the sample they select by sniffing, and on serving temperature preference having been shown in cats (read it)

Abrupt Dietary Change and Gradual Dietary Transition Impact Diarrheal Symptoms, Fecal Fermentation Characteristics, Microbiota, and Metabolic Profile in Healthy Puppies (Liao et al., Animals, 2023), the controlled comparison of a seven-day stepped transition against an abrupt switch (read it)

How do I switch my pet's food? (Petfoodology, Cummings School of Veterinary Medicine at Tufts University), on transitioning over at least a week, on some pets needing four to six weeks, and on holding at the last ratio that was fine (read it)

The Right Way to Switch Dog Foods (American Kennel Club), on the quarter, half, three-quarter steps and on slowing down at the first sign of upset (read it)

Why Is My Dog a Picky Eater? (American Kennel Club), for Dr Jerry Klein's fifteen to twenty minute bowl window, no treats until the next scheduled meal, and the twelve to twenty four hour appetite threshold (read it)

When to See a Veterinarian (MSD Veterinary Manual), for the 24 hour thresholds on vomiting, diarrhoea and refusing food or water (read it)

Nutritional Requirements of Small Animals (Merck Veterinary Manual), on growing puppies needing well above adult maintenance energy, most of all under four months (read it)

Food Safety: the 2-hour rule (UF/IFAS Extension, Broward County), on perishable food and the bacterial growth range (read it)

Meat Safety: Thawing (University of Illinois Extension), on thawing in the fridge rather than on the counter (read it)

One thing we could not find evidence for, so we cut it: there is no published figure for how many owners abandon a fresh diet specifically in week one. The line above about week one is our own experience with our own customers, not a statistic.