How to Switch Your Dog to Fresh Food

• Transition gradually over 7 to 10 days, starting with 25% fresh food and increasing in stages — an abrupt switch is the most common cause of digestive upset during the change
• Loose stools and mild flatulence in the first week are normal and temporary as the gut microbiome adjusts to a new diet
• Dogs switching from kibble to fresh food typically show improvements in stool consistency, coat condition, and energy levels within 4 to 6 weeks
• Sensitive dogs benefit from a slower two-week transition, starting with a smaller initial proportion of fresh food
• Treats and toppers should be kept consistent during the transition period to avoid introducing multiple variables at once

Why does switching dog food need to be gradual?

A dog's gut microbiome, the community of bacteria that lives in the digestive tract and drives nutrient absorption, immune function, and stool health, is adapted to the food it has been eating. When the diet changes significantly, the microbiome needs time to shift its bacterial populations to match the new nutritional profile. Fresh food is more digestible than kibble and has a very different composition, particularly in moisture content, protein bioavailability, and fibre type. An abrupt switch overwhelms the gut's ability to adapt quickly, which is why digestive upset is so common when owners switch their dog's food overnight.

A gradual transition gives the bacteria in the gut time to adapt in response to the new food, without causing the imbalance that leads to loose stools, flatulence, or vomiting. It also gives the dog time to accept the new food on its own terms, which matters for fussy eaters who may initially be suspicious of something unfamiliar.

What is the recommended transition schedule?

The standard transition for most dogs runs over 7 to 10 days and follows a progressive ratio shift from current food to new food. A reliable schedule is:

Monitor stool consistency throughout. Firm, well-formed stools are a sign that the transition is going well. Loose stools that persist beyond the first three or four days are a signal to slow the pace and spend more time at the current ratio before progressing. Most dogs complete the transition without significant issues, particularly when moving to a fresh food with natural prebiotics that actively support the gut microbiome during the adjustment period.

What is normal during the transition and what is not?

Some digestive adjustment is normal and expected in the first week. Stools may be softer than usual, slightly more frequent, or less consistent in appearance. Mild flatulence is also common as the gut microbiome shifts. These are signs that the digestive system is adapting, not signs that the food disagrees with the dog.

What is not normal is vomiting, bloody stools, complete refusal to eat for more than 24 hours, or significant lethargy alongside digestive changes. If any of these occur, pause the transition, return to the previous food, and speak to a vet before trying again. In most cases, a restart with a slower pace resolves the issue.

Does the transition work differently depending on what the dog was eating before?

Yes. Dogs switching from kibble typically require the full 7 to 10 day transition because the difference between kibble and fresh food is significant. The gut microbiome of a kibble-fed dog is meaningfully different from that of a fresh-fed dog, and the shift takes time.

Dogs switching from wet food to fresh food tend to transition more easily because the moisture content and texture are similar. A 5 to 7 day schedule is often sufficient. Dogs switching from frozen fresh food to Pantry Fresh® are already adapted to a fresh food diet and typically need only a few days of gradual mixing before switching fully, since the nutritional profile is comparable between formats.

Dogs with a history of sensitive digestion or gastrointestinal issues benefit from a slower two-week transition, starting at 10 to 15% fresh food rather than 25% and increasing by smaller increments. This is more conservative than necessary for most dogs but reduces the risk of setbacks that can make owners lose confidence in the process.

"When a dog changes diet, the gut is exposed to a different combination of moisture, fibre, fats. A gradual transition helps the digestive tract adapt to that new nutrient environment with fewer disruptions in stool quality."

— Dr. Davide Stefanutti, DVM, PhD, Veterinarian Nutritionist

What should I expect after the transition is complete?

Most owners notice changes within the first four to six weeks of fresh feeding. Stool consistency tends to improve: fresh food is more digestible than kibble, meaning less undigested material passes through, resulting in smaller, firmer, less odorous stools. Coat condition can improve noticeably within six to eight weeks as the higher bioavailability of healthy fats in fresh food takes effect. Energy levels and mealtime enthusiasm can improve even sooner, often within the first two to three weeks.

In the Marleybones customer survey of 1,056 subscribers, 71% reported better digestion and stool quality, 46% noticed a shinier or softer coat, and 67% said their dog was more excited at mealtimes after switching. These improvements tend to compound over time as the gut microbiome becomes fully adapted to a fresh food diet.

How do I transition a dog that is reluctant to eat the new food?

Start with a smaller proportion than the standard 25%: even 10% fresh food mixed into the current food is enough to begin familiarising the dog with the new aroma and texture. Warming the fresh food slightly, to just below body temperature, intensifies its natural aroma and makes it more appealing. Serve at consistent mealtimes rather than leaving food out, and remove the bowl after 20 minutes whether the dog has eaten or not. A healthy dog will not choose to go hungry indefinitely, and a consistent routine removes the option of holding out for something better.

Avoid adding strong-smelling toppers or treats to entice eating during the transition. This works short-term but creates an expectation that the food will always be embellished, which makes the underlying reluctance harder to address. Dogs that consistently resist new foods may benefit from strategies covered in our guide to feeding dogs that are reluctant to try unfamiliar meals.

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FAQs

Can I switch my dog to fresh food overnight?

Technically yes, but it significantly increases the risk of digestive upset. An abrupt switch does not give the gut microbiome time to adjust and can cause loose stools, vomiting, or flatulence that puts both dog and owner off the new food before the benefits have had time to show. A gradual 7 to 10 day transition produces a much smoother outcome for most dogs.

My dog has a sensitive stomach. How do I transition them safely?

Use a slower two-week transition, starting with 10 to 15% fresh food and increasing by small increments every two to three days. Monitor stool consistency closely and hold at the current ratio for an extra day or two if stools become loose before progressing. Marleybones Pantry Fresh® includes chicory root, a natural prebiotic that feeds the beneficial bacteria supporting healthy digestion, in every recipe, which actively supports the gut microbiome during the adjustment period and tends to produce better outcomes for sensitive dogs than fresh foods without prebiotic ingredients.

Do I need to change my dog's portion size when switching to fresh food?

Most likely yes, because fresh food will have a different caloric content compared to the previous food. During the transition, follow the Marleybones feeding guide for your dog's weight rather than matching the volume of their previous food. A personalised feeding guide is provided as part of the Marleybones subscription plan, and you can also find the right food and portion guidance for your dog by answering a few quick questions.

What if my dog gets loose stools during the transition?

Slow the pace. Return to the previous ratio, the one that was producing firm stools, and hold there for an extra two to three days before progressing again. Temporary loose stools in the first week are normal, but persistent loose stools are a signal to go more slowly. If loose stools continue for more than five days or are accompanied by vomiting or blood, consult a vet.

How long until I see the benefits of fresh feeding?

Mealtime enthusiasm and energy improvements are often visible within the first two to three weeks. Stool consistency typically improves within the first month as the gut microbiome adapts fully. Coat condition and skin health improvements are usually noticeable within six to eight weeks. The full benefits of fresh feeding tend to compound over several months, and Marleybones fresh meals are formulated to support those long-term improvements across every life stage.

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References

1. Liao, P., Yang, K., Huang, H., Xin, Z., Jian, S., Wen, C., et al., & Deng, B. (2023). Abrupt dietary change and gradual dietary transition impact diarrheal symptoms, fecal fermentation characteristics, microbiota, and metabolic profile in healthy puppies. Animals, 13(8), 1300.
2. Maturana, M., Castillejos, L., Lesaux, A. A., & Martin-Orue, S. M. (2025). Impact of an abrupt change from dry to canned diet on digestive function and gut microbiota in dogs. Journal of Animal Science, 103, skaf143.
3. Tanprasertsuk, J., Shmalberg, J., Maughan, H., Tate, D. E., Perry, L. M., Jha, A. R., & Honaker, R. W. (2021). Heterogeneity of gut microbial responses in healthy household dogs transitioning from an extruded to a mildly cooked diet. PeerJ, 9, e11648.
4. Do, S., Phungviwatnikul, T., de Godoy, M. R., & Swanson, K. S. (2021). Nutrient digestibility and fecal characteristics, microbiota, and metabolites in dogs fed human-grade foods. Journal of Animal Science, 99(2), skab028.
5. Propst, E. L., Flickinger, E. A., Bauer, L. L., Merchen, N. R., & Fahey Jr, G. C. (2003). A dose-response experiment evaluating the effects of oligofructose and inulin on nutrient digestibility, stool quality, and fecal protein catabolites in healthy adult dogs. Journal of Animal Science, 81(12), 3057-3066.