
Why Dog Food with Prebiotics MOS and FOS Is Your Dog’s Best Friend
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At Ultimate Pet Foods, we know that great dog food starts with great ingredients—but it doesn’t stop there. That’s why we go beyond protein sources to include powerful, gut-friendly prebiotics: MOS (Mannan-oligosaccharides) and FOS (Fructo-oligosaccharides). These natural fibres might sound scientific, but their impact on your dog’s health is simple—and profound.
1. Supporting Healthy Digestion
Your dog’s digestive system is home to billions of bacteria—some helpful, some not. MOS and FOS work as food for the good guys, feeding beneficial bacteria in the gut. This supports healthy digestion, smoother stools, and less tummy upset—perfect for dogs with sensitive stomachs or inconsistent bowels.
2. Strengthening the Immune System
A huge portion of your dog’s immune system lives in the gut. That means a balanced digestive system does more than process food—it helps your dog fight off illness. Prebiotics help create the right environment for the immune system to thrive, giving your dog stronger everyday resilience.
3. Reducing Gas and Smelly Stools
Let’s face it—some dog foods lead to digestive odors you’d rather live without. When the gut is out of balance, bad bacteria can produce unpleasant smells. MOS and FOS help restore balance, reducing flatulence and producing firmer, less odorous stools. It’s a win-win for your dog—and your nose.
4. 100% Natural and Proven Effective
Our prebiotics come from natural sources: MOS is derived from yeast cell walls, while FOS is found in plants like chicory root. Both are widely used in veterinary nutrition and have been studied for their benefits in both humans and pets. They’re safe, effective, and completely natural.
5. A Smarter Choice for Lifelong Health
We don’t add ingredients unless they make a meaningful difference to your dog’s well-being. That’s why you’ll find MOS and FOS in many of our Ultimate Superfoods for Dogs recipes—alongside 65% high-quality animal protein, naturally occurring collagen, omega-3, joint care, and carefully selected superfoods.
Want to try it for yourself?
Request your FREE grain free dog food sample today and see the difference prebiotics can make to your dog’s digestion and health.
Your dog’s tail will thank you. 🐶
Read about the ingredients in our food, and why we are so open about it.
We believe that when it comes to your dog’s nutrition, you deserve full transparency. That’s why we carefully explain every ingredient we use and how it benefits your dog’s health.
If you’d like to learn more about what makes our recipes different—from how we prepare our meats to why we avoid fillers—take a look at this in-depth read:
👉 Why Freshly Prepared Meat and Fish Make Us One of the Best Dog Food Brands
It’s a great next step in understanding why Ultimate Pet Foods is trusted by so many dog lovers.