Vet reviewed
Fresh Dog Food vs Freeze Dried – Which is Better for Your Dog?
At a glance
- Freeze drying removes around 98% of moisture from ingredients, producing a dry, lightweight product; fresh dog food contains 65–75% moisture, directly supporting hydration and digestive function
- Freeze drying preserves nutrients exceptionally well, retaining up to 97% of the original nutritional content, making it one of the least destructive preservation methods available
- Rehydration before serving is typically recommended for freeze-dried dog food; Pantry Fresh® meals are ready to serve straight from the cupboard with no preparation
- Freeze-dried raw products carry the same bacterial contamination risks as fresh raw food; freeze-dried cooked products do not
- The main practical differences between the 2 formats are moisture, preparation, and cost
Fresh dog food vs freeze-dried dog food: comparison
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Fresh dog food (Marleybones Pantry Fresh®) |
Freeze-dried dog food |
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Format |
Moist, complete fresh meal; ready to serve |
Dry, lightweight pellet or nugget; typically requires rehydration |
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Moisture content |
65–75%, supports hydration and digestion |
~2–5% before rehydration; comparable to fresh once water is added |
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Processing method |
~89°C in-pack steam cooking; ingredients cooked before sealing |
Ingredients frozen, then moisture removed under vacuum at very low temperatures |
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Nutrient retention |
High (gentle cooking) |
High |
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Bacterial safety |
Cooking eliminates pathogens; safe for all dogs and handlers |
Freeze-dried raw carries bacterial risk; freeze-dried cooked does not |
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Main ingredients |
60%+ real meat, whole vegetables, superfoods: chicory root, chia seeds, hemp seeds |
Typically raw or cooked meat and vegetables; quality varies by brand |
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Preparation |
Ready to serve from the cupboard |
Rehydrating with water is usually recommended to increase moisture intake and improve texture |
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Storage |
Room temperature, up to 18 months unopened |
Room temperature, typically 1–2 years; no freezer required |
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Cost |
From £1.96/day for a 5kg dog |
Typically among the more expensive dog food formats per daily serving |
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Life stage coverage |
Complete for all life stages including puppies |
Varies by brand and product; check nutritional adequacy statement |
What is freeze-dried dog food and how is it made?
Freeze drying is a preservation process that removes moisture by first freezing the ingredients solid, then placing them in a vacuum chamber where the frozen water converts directly to vapour without passing through a liquid stage. This process, known as sublimation, removes around 98% of the moisture while leaving the nutritional structure of the food largely intact. The result is a lightweight, shelf-stable product with an exceptionally long shelf life and very high nutrient retention.
Freeze-dried dog food comes in two main forms: raw and cooked. Freeze-dried raw uses uncooked ingredients before drying, preserving the nutritional profile of raw meat but also its bacterial risks. Freeze-dried cooked uses ingredients that have been cooked first, eliminating pathogens before the drying process. The distinction matters for food safety and should be checked on the product label.
Most freeze-dried complete diets are intended to be rehydrated with warm water before serving, returning the product closer to its original texture and moisture level. Some owners serve them dry, though this is not usually recommended, since dogs benefit from adequate moisture from their food.
How does freeze-dried compare to fresh dog food nutritionally?
Freeze drying is genuinely impressive as a preservation method. By avoiding high heat, it retains more of the original nutritional content than almost any other preservation technique, including the gentle cooking used in fresh dog food. However in practice the difference usually becomes negligible. Cooking does break down some heat-sensitive vitamins, but these losses are accounted for in the formulation, ensuring the final product is complete and balanced. The prebiotic ingredients in Marleybones Pantry Fresh® meals, including chicory root rich in inulin and yucca, provide active gut health support that freeze-dried products often do not match.
Freshly prepared British lamb, veggies & superfoods
Is freeze-dried raw dog food safe?
Freeze-dried raw carries the same bacterial contamination risks as fresh raw food. Freezing and freeze drying do not eliminate Salmonella, E. coli, Listeria, or other pathogens present in raw meat; they suspend them. Once the product is rehydrated, those bacteria become active again. The risk applies to dogs eating the food and to humans handling it.
Freeze-dried cooked dog food does not carry this risk, as pathogens are eliminated during the cooking stage before drying. If choosing a freeze-dried product, checking whether it is raw or cooked before purchase is important, particularly for households with children, elderly members, or anyone with a compromised immune system.
Is freeze-dried dog food worth the cost?
Freeze-dried dog food is typically one of the more expensive formats per daily serving, often significantly so. The high cost reflects the energy-intensive freeze-drying process and the premium positioning of most brands in the category. For owners who want the closest thing to raw feeding without the preparation and bacterial handling risks of fresh raw, freeze-dried cooked food can be an option, though it sits at a price point that makes it impractical as a daily diet for many households.
Marleybones Pantry Fresh® starts from £1.96 per day for a 5kg dog, delivering comparable ingredient quality and nutritional completeness to premium freeze-dried products at a more accessible price point, with no rehydration required.
Which dogs benefit most from fresh food over freeze-dried?
Dogs with sensitive stomachs benefit from the natural moisture and prebiotics of fresh food, which can support gut health more directly than a rehydrated freeze-dried product. Puppies and seniors benefit from the soft, immediately ready texture of fresh food. Fussy eaters tend to respond better to the natural aroma of gently cooked fresh meat than to a rehydrated product.
Freeze-dried food suits owners who want maximum nutrient retention and are willing to pay a premium and rehydrate the food. For those who want premium ingredient quality with no preparation and reliable nutritional completeness, Pantry Fresh® meals are a more practical choice.
Every dog is different — build your personalised Marleybones feeding and health plan tailored to your dog's age, size, and health requirements.
“Such a relief to see her enjoying her food”
FAQs
Is freeze-dried dog food the same as air-dried dog food?
No. Freeze drying and air drying are different processes with different results. Freeze drying removes moisture under vacuum at very low temperatures, retaining up to 97% of nutrients. Air drying removes moisture by exposing ingredients to warm air over an extended period, typically at 50–70°C, which is gentler than kibble but less effective at nutrient retention than freeze drying. Freeze-dried food is generally more expensive than air-dried; both are dry, low-moisture formats compared to fresh food.
Does freeze-dried dog food need to be refrigerated?
No. Freeze-dried dog food is shelf-stable at room temperature, typically for one to two years. Once rehydrated, it should be treated like fresh food: refrigerate leftovers and use within 24–48 hours. Marleybones Pantry Fresh® meals are also shelf-stable at room temperature for up to two years unopened, and once opened should be refrigerated and used within 2–3 days.
Can I use freeze-dried food as a meal topper alongside fresh food?
Yes, and this is a common approach. Using a small amount of freeze-dried food as a topper over fresh meals adds textural variety and concentrated flavour, which can help with fussy eaters. When doing this, account for the freeze-dried topper in the daily calorie total and reduce the main meal portion slightly to avoid overfeeding.
Does Marleybones Pantry Fresh® need to be refrigerated?
No. Pantry Fresh® meals are shelf-stable at room temperature for up to two years unopened, with no freezer or refrigeration required before opening. Once opened, refrigerate and use within 2–3 days.
How do I switch my dog from freeze-dried to fresh food?
Transition gradually over 7–10 days. Start by replacing 25% of the freeze-dried portion with fresh food on days 1–3, increasing to 50%, then 75%, then 100% by day 8–10. The shift from a low-moisture rehydrated format to a naturally moist fresh food is usually well tolerated, though dogs with sensitive digestion may benefit from a slower two-week transition.
“A complete game changer!!”
Reviewed by Dr Davide Stefanutti DVM, PhD, Veterinarian Nutritionist
References
- Nowak, D., & Jakubczyk, E. (2020). The freeze-drying of foods — the characteristic of the process course and the effect of its parameters on the physical properties of food materials. Foods, 9(10), 1488.
- Finn, S., Condell, O., McClure, P., Amézquita, A., & Fanning, S. (2013). Mechanisms of survival, responses and sources of Salmonella in low-moisture environments. Frontiers in Microbiology, 4, 331.
- Nemser, S. M., Doran, T., Grabenstein, M., McConnell, T., McGrath, T., Pamboukian, R., & Reimschuessel, R. (2014). Investigation of Listeria, Salmonella, and toxigenic Escherichia coli in various pet foods. Foodborne Pathogens and Disease, 11(9), 706–709.
- Geary, E. L., Oba, P. M., Templeman, J. R., & Swanson, K. S. (2024). Apparent total tract nutrient digestibility of frozen raw, freeze-dried raw, fresh, and extruded dog foods and their effects on serum metabolites and fecal characteristics, metabolites, and microbiota of healthy adult dogs. Translational Animal Science, 8, txae163.
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