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How a Cat’s Digestion Differs from Dogs and Humans – What Every Pet Parent Should Know

  • Writer: Jasmine Toh
    Jasmine Toh
  • Jul 17
  • 2 min read

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Ever wondered why your cat turns up their nose at leftovers or why they can’t handle certain foods your dog gobbles up? It’s not just about fussiness — your cat’s digestion is biologically different.


In this article, we break down the key differences between feline digestion, canine digestion, and human digestion, and why choosing the right food — like Pawsitive Fuel’s TCM-inspired recipes — makes all the difference.


🧬 1. Cats Are Obligate Carnivores — Dogs and Humans Are Not


The most important difference? Cats are obligate carnivores. That means they require animal protein to survive. Their bodies are built to process meat — not grains, starches, or plant-based diets.


What this means:

  • Cats lack certain enzymes to digest carbs efficiently

  • They must get taurine, vitamin A, and arachidonic acid from meat

  • They don’t produce enough amylase (a carb-digesting enzyme)


By contrast:

  • Dogs are omnivores and can digest a mix of meat and plants

  • Humans are highly adaptive omnivores with strong digestive enzymes for carbs, fibre, and plants


🕐 2. Cats Have a Shorter Digestive Tract

Cats have a relatively short gastrointestinal tract, meaning food passes through quickly. They don’t ferment fibre or break down complex carbs well.


What this means:

  • They extract nutrients primarily from protein and fat

  • Carbohydrate-rich diets may cause bloating or digestive issues

  • Easily digestible, high-meat-content food is ideal


💧 3. Cats Are Not Natural Water Drinkers

In the wild, cats get most of their hydration from prey. Unlike dogs, cats don’t instinctively drink a lot of water, even when their body needs it.


What this means:

  • Wet food is essential for hydration

  • Dry kibble diets may increase risk of kidney or urinary issues

  • High-moisture, meat-based diets like Pawsitive Fuel support urinary tract health


🧪 4. Cats Are Sensitive to Food Quality & Additives

Cats have strong preferences and sensitive systems. Poor-quality ingredients, fillers, or preservatives can easily lead to digestive upset, vomiting, or diarrhoea.


By contrast:

  • Dogs have more robust digestive systems

  • Humans can tolerate a wide variety of food additives and ingredients


Cats thrive best on diets that are simple, high in quality protein, and free from artificial additives.


🍲 What to Feed Instead: Pawsitive Fuel’s TCM-Inspired Recipes

At Pawsitive Fuel, we’ve crafted recipes specifically for feline digestion — not canine, and definitely not human.


✔️ Human-grade chicken and salmon✔️ No grains, no fillers, no preservatives✔️ Gently cooked for maximum digestibility✔️ TCM herbs like goji berries, milk thistle, cranberries, and ginseng to support immunity, digestion, and recovery


❌ Don’t Assume Cat and Dog Food Are Interchangeable

Giving your cat dog food — even temporarily — may cause:

  • Nutritional deficiencies (esp. taurine)

  • Digestive upset

  • Long-term organ damage if continued


Always choose species-appropriate food.


🐾 Final Meow: Choose What’s Right for Their Tummy

Cats aren’t small dogs. They’re unique animals with unique digestive needs — and they deserve a diet that respects that.


With Pawsitive Fuel, you’re feeding them the way nature intended — clean, nutritious, protein-first meals with a TCM twist for total wellbeing.


📦 Ready to nourish your cat from the inside out?

👉 Shop now 📱 Follow us @pawsitive.fuel on TikTok and Instagram

 
 
 

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