How to Transition a Puppy from Kibble to Fresh Food

At a glance

• Transition over 7 to 10 days — not overnight
• Start with around 25% fresh food, increase every 2 to 3 days
• Loose stools during transition are normal; persistent vomiting is not
• Fresh food looks and smells very different to kibble — puppies almost always prefer it
• Portion sizes differ between fresh and dry food, so recalculate before you start

Why does the switch need to be gradual?

Transitioning a puppy from kibble to fresh food needs to be done slowly because the gut microbiome — the community of bacteria living in your dog's digestive system — needs time to adjust to a new food. Kibble is heavily processed and very low in moisture. Fresh food is the opposite: higher in protein, higher in moisture, and made from whole ingredients. That is a significant shift, and the digestive system needs to catch up.

Go too fast and you are likely to see loose stools, some gassiness, or a general unsettled stomach. That does not mean the food is wrong — it just means the change happened too quickly. A gradual approach avoids most of this entirely.

Puppies are actually better at adapting than adult dogs. Their gut microbiome is still forming, so it responds to dietary changes more quickly. Even so, slow is always better than fast.

How do you actually do the transition?

The simplest method is a straightforward ratio plan over 7 to 10 days. Mix fresh food into the kibble and gradually shift the balance:

• Days 1 to 3: 25% fresh food, 75% kibble
• Days 4 to 6: 50% fresh food, 50% kibble
• Days 7 to 9: 75% fresh food, 25% kibble
• Day 10 onwards: 100% fresh food

If your puppy has a sensitive stomach, stretch this to 14 days by spending an extra few days at each stage. There is no prize for speed. The goal is a smooth, settled transition with no digestive upset.

One thing to sort out before you start: portion sizes. Fresh food is much more nutrient-dense than kibble, and it contains a lot more moisture — so the volume looks different. Puppies have specific calorie needs by age and weight, so use the fresh food brand's feeding guide to recalculate before the switch, not after.

Marleybones meals include a feeding guide based on your puppy's weight and age. The recipes are FEDIAF compliant and complete for all life stages, so no separate puppy formula is needed — the same meal works from puppyhood through to adulthood.

What should you expect during the transition?

Some change in stools is completely normal during the first week. Fresh food produces less waste than kibble because more of it is actually digested and used. So smaller, firmer stools are a good sign, not a concern.

Softer stools for a few days are also normal, especially in the first half of the transition. If loose stools persist beyond day five or six, slow the transition down rather than pushing through. Go back to the previous ratio for a couple of days, then continue at a slower pace.

If your puppy is vomiting repeatedly, refusing to eat entirely, or showing signs of real discomfort, speak to your vet. Digestive upset during a food change is common — but those symptoms falling outside the ordinary warrant a professional eye.

You can support gut health during the transition with a prebiotic or probiotic supplement. Prebiotics feed the beneficial bacteria already living in the gut, helping them multiply faster as the diet changes. This can noticeably reduce the loose stool window.

Will a puppy actually eat fresh food if they are used to kibble?

Almost always, yes — and enthusiastically. Kibble relies heavily on sprayed-on flavourings to be palatable. Fresh food smells and tastes like real meat and vegetables, which is far more appealing to dogs. Most puppies take to it immediately.

If your puppy is hesitant at first, that is usually about novelty rather than preference. A new texture, a new smell, a new bowl temperature — puppies can be cautious creatures. A puppy refusing new food is rarely a sign that they dislike it. Give it a day or two and serve the food at room temperature rather than straight from the fridge.

Marleybones Pantry Fresh meals are shelf-stable — no freezing required — so there is no thawing step to manage and the meals are naturally closer to serving temperature when opened. If you are looking to explore options, the full range of meals covers beef, chicken, lamb, and salmon.

If a puppy was raised on one type of food from a very young age, it sometimes takes a little longer to accept something new. Mixing the fresh food thoroughly through the kibble in the early days helps — the familiar smell provides reassurance while the puppy adjusts.

“Such a relief to see her enjoying her food”

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FAQs

Can puppies eat fresh food from weaning?

Yes. Fresh food formulated to be complete for all life stages is appropriate from weaning onwards. There is no need to wait until a puppy is older — the key is choosing a recipe that meets puppy nutritional requirements, not just adult maintenance levels.

Do I need a special puppy version of fresh food?

Not necessarily. Some brands formulate separate puppy recipes, but a complete fresh food that meets FEDIAF nutritional standards for all life stages covers puppy requirements without a separate product. Marleybones meals are complete for all life stages, including puppies.

How long does a full transition from kibble to fresh food take?

For most puppies, 7 to 10 days is enough. For puppies with a sensitive stomach or any history of digestive upset, 14 days is a safer timeline. Extending the transition does not cause any problems — it only reduces the chance of loose stools.

Should I mix fresh food and kibble in the same bowl?

During the transition, yes — mixing them together is the recommended approach. Some owners worry about mixing wet and dry food in the same bowl, but there is no evidence this causes digestive issues. After the transition is complete, most owners move to feeding fresh food on its own.

Why does my puppy's poo look different after switching to fresh food?

Fresh food is much more digestible than heavily processed kibble, so less waste is produced. Stools typically become smaller, firmer, and less smelly. Some variation in the first week is completely normal as the gut adjusts. If loose stools persist beyond a week, slow the transition down and consult your vet if it continues.

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