September 29, 2026, 3:19 pm | Read time: 3 minutes
The growing need for people to feed not only themselves but also their dogs in a meatless and sustainable way is steadily increasing. A new alternative could be mushroom-based dog food. PETBOOK author and dog nutritionist Philine Ebert explains what this novel, innovative food is all about.
Mushroom-Based Dog Food – What Is It?
Mushroom-based food is an innovation in dog nutrition. Compared to conventional food made from animal or plant proteins, proteins for this are obtained from specially cultivated mushrooms. The mushrooms are specifically grown for the production of food or feed on grains, such as rice, as they provide the starch needed for growth.
Mushrooms are rich in bioactive substances, high-quality protein, and functional ingredients. The cultivated mushrooms are mostly a protein derived from the filamentous mold Aspergillus flavus var. Oryzae, known as Koji. Koji is an Asian, very protein-rich fungus that serves as the basis for many traditional Asian foods and is, for example, the foundation of soy sauce, sake, and miso. The protein of Koji is quite similar in texture, taste, and nutrient content to real meat. Koji contains important enzymes (essential for digestion), antioxidants, and microbiological prebiotics to support gut health.
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But other vital mushrooms such as Reishi, Chaga, Shiitake, or King Oyster are also suitable for the production of dog food. They are then supplemented with mycelium (the underground network of fungi) and bacterial protein.
For Which Dogs Are Mushrooms a Suitable Alternative?
Mushroom-based food is particularly suitable for dogs with allergies that react to meat proteins and for animals with very sensitive digestion. As food intolerances, allergies, chronic diseases, and gastrointestinal problems are steadily increasing, this often requires a long-term feeding or switch to an alternative protein source.
Mushroom-based food is nutrient-rich, vegetarian, or even vegan, grain-free, and easily digestible. It supports the body with bioactive substances that positively influence the immune system and digestion and have a vitalizing effect. It provides all the essential amino acids the body needs.
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Vegan Dog Food Comparable to Meat-Based Options
Vegan Diet for Dogs–Sensible or Dangerous?
Quality, Sustainability, Environment, and Ethics
The cultivated mushrooms are grown regionally and therefore have a high quality standard. The risk of contamination during feed production or contamination with bacteria that can occur during meat processing is minimal. The danger that a dog will develop antibiotic resistance (triggered by contaminated meat) in the long term is almost eliminated by avoiding meat in the feed.
The production of mushroom-based food is also particularly sustainable, as the associated energy expenditure is much lower. It requires fewer CO₂ emissions than the production of conventional wet and dry food.
Many pet owners who themselves pay attention to a sustainable, vegetarian, or vegan and thus animal cruelty-free diet are increasingly turning to such food for their dogs out of conviction.
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My Conclusion
Whether dog food without animal protein can meet a dog’s natural and balanced diet in the long term remains a highly controversial topic. However, if the food is balanced, contains all essential nutrients, high-quality other protein sources, and thus meets the animal’s nutritional needs, it is a great and innovative enrichment. Especially for owners who have few alternatives due to their dog’s allergies and intolerances to animal proteins, mushroom-based food is particularly well-suited.