Can a Dog Flap Work for a Cat Too? Pros & Cons

If you already have a dog door installed or you’re thinking of getting one, you might be wondering: can my cat use it too? The short answer is yes — but there are a few important factors to consider before letting your feline share the flap.

✅ Pros of Using a Dog Flap for Your Cat

• More Freedom: A shared flap means both pets can come and go without needing separate doors.
• Convenience: One installation, one solution — ideal for multi-pet households.
• Great for Larger Cats: Big breeds like Maine Coons may fit more comfortably through a dog-sized flap.
• Less Fuss with Scheduling: If your dog and cat have similar routines, a single flap can keep things simple.

⚠️ Potential Downsides

• Security Risks: A larger flap may be easier for other animals (or people) to access. Without microchip control, any pet could come through.
• Drafts & Energy Loss: Bigger doors mean more potential for heat loss and less insulation.
• Height & Accessibility: Dog flaps are often installed higher up. This can make access tricky for smaller or older cats.
• Behavioural Conflicts: Some cats feel anxious sharing territory — especially entry points — with dogs.

What to Look For

• Adjustable height: Make sure your cat can comfortably reach the flap
• Locking features: Choose a 4-way lock or microchip model for safety
• Sturdy flap design: Avoid heavy or stiff flaps that may scare your cat
• Silent operation: Quieter doors encourage cats to use them

Final Thoughts

A dog flap can absolutely work for cats — but only if it’s properly chosen and thoughtfully installed. Monitor your cat’s comfort and confidence using it. For multi-pet homes, microchip flaps with adjustable settings can offer the best balance of freedom and security.

Looking for a flap both your dog and cat will love? Browse our pet door collection at catflaps.co.uk for versatile, secure options.

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