Top 5 Dog Doors to Keep Cats Secure Inside Now

Does your dog love the freedom of a dog door, but you worry about neighborhood strays or your own curious cat sneaking out? Many pet owners face this exact problem. You want your dog to have easy access to the yard, but you need a secure barrier to keep other animals—especially clever cats—exactly where they belong: inside the house.

Choosing the right dog door that specifically excludes cats can feel like a maze. You read product descriptions, but it’s hard to know if a door truly works for your specific household size differences. The pain of buying the wrong door—only to find your feline friend easily slipping through—is frustrating and costly.

This guide cuts through the confusion. We will break down the best features and models available, focusing only on doors designed with cat exclusion in mind. By the end of this post, you will know exactly which dog door offers the perfect, secure solution for your multi-pet home.

Top Dog Door To Keep Cats Inside Recommendations

No. 1
Door Buddy Door Prop for Cats - Easiest Cat Door Latch Holder to Keep Interior Door Open for Pets - Dog Proof Cat Feeding Station & Litter Box - Strong & Portable Door Stopper & Pet Gate Alternative
  • Lets Cats In and Keeps Dogs Out - The Door Buddy Cat Door Prop is the easy, convenient, and secure way to keep door cracked open for cat to go in while also keeping it narrow enough to keep dog out of room (if slightly larger than cat).
  • Effortless to Use - Simply turn the knob or handle from either side to open the door and enter the room. It can't get any easier than that. Nothing to manually latch and unlatch every time you enter the room. Relatching in the propped position is even easier... just push or pull the door closed until the Door Buddy Door Latch Holder automatically latches onto the door plunger. That is it!
  • Simple Installation, Non-Permanent & Portable - Remove the existing strike plate from the door jam and replace it with the Door Buddy strike plate using existing screws. The Door Buddy Door Holder for Cats does not require any adhesives, cutting, or making new holes in your door, making it removable, reusable, and the perfect solution for renters and travelers alike. The result - a dog proof cat litter box in seconds.
  • Adjustable Width - Our patented strike plate and door latch holder allow you to adjust the width of the door opening to keep the door ajar between 3 - 5.5 inches so you can customize it to the exact sizes of your pets. Simply loosen the little screws, slide the two pieces to the desired width, and fully tighten the screws until it locks and no longer slides. T8 Torx tool is provided in the product package.
  • Strong, Durable & Pinch Free - Made from thick, high-quality materials making it strong and durable so it will stand up even to big and determined dogs. Finally, a pet, dog, cat door stopper where there is no "movement" when in the propped position which means no pinched fingers, tails, and no getting locked in or out of rooms.
No. 2
Door Buddy Cat Door Latch & Stopper. Adjustable Dog Proof Door Strap for Cats. Dog Proof Litter Box & Cat Feeder. Simpler Pet Gate Alternative. No Cut Cat Door Interior Door.
  • ✅ THE ORIGINAL NO CUT CAT DOOR - Door Buddy’s adjustable pet door latch for cats is the original interior cat door alternative that gives cats back their space! No need to cut out a kitty door for interior door or fight a bulky pet gate with cat door. While cheap pet door holder knock-offs are tempting, there’s no one as customizable, durable, and effective as Door Buddy‘s made in the USA cat door strap for pets
  • ✅ KEEP DOGS OUT & TAILS SAFE - Door Buddy's dog proof door latch is the easiest way to keep door cracked open for cat while also allowing you to dog proof litter box. Thanks to our extra strong 3M adhesive and door stopper for cats, Door Buddy’s pet door strap combo can stop dogs up to 120lb from getting into no-go rooms while keeping doors propped open. Finally, a cat door for interior door without any hassles or a dog proof cat feeding station solution that your cat will love.
  • ✅ SIMPLE & EFFECTIVE INSTALLATION - A tool-free pet door lock that's simple and works! The 3M adhesive sticks to your door & door frame, the adjuster allows you to keep the door cracked open just enough to suit your cat's width, and finally lock the hook into the latch. The strap will flex around the door for an easy to use and easily accessible dog door latch from either side of the door. DO NOT install on drywall. For extra motivated dogs, install on the back of door for a stronger hold.
  • ✅ CUSTOMIZABLE & ADJUSTABLE - Door Buddy works on the most door types including bifold, sliding, pocket, and double doors. Now you can dog proof cat litter boxes and keep dog out cat food no matter the room! With our adjustable mechanism, you can fully customize the width to keep door ajar for pets from 0-6” wide. Adjust to smallest gap to keep cats out or adjust it to fit your kitty and keep dogs out of room. For extra safety, use the foam pet door stopper to prevent door from closing.
  • ✅ MADE IN THE USA - Quality fur-parents deserve quality products. Door Buddy is small business owned, parent invented, and made in the USA. Unlike other cheaper, less durable and imported dog door stopper & cat door holder straps, Door Buddy's adjustable dog door strap and cat door stop combo is both affordable and made with superior quality materials. Give our Door Buddy Door door lock latch and Cat Door Prop a try today and see for yourself why thousands of pet owners love it so much.
No. 3
Bow Wow Barrier 28-Inch White Retractable Exterior-Door Barrier for Pets
  • 100% USA Made & Manufactured: Unlike other products that claim to be USA made but parts still come from overseas, Smart Retract is proud to only source high-quality, local parts to support community and create the safest, most secure front door dog gate available.
  • Gate for Front Door: The Bow Wow Barrier mounts to your door and door jamb to stop your dog or cat from running out doors as you collect a delivery or talk to your neighbor. No more crating pets or awkward body barriers needed when you open the door!
  • 28” Wide x 34” Tall: The Bow Wow Barrier expands up to 28” wide when fully opened. The scratch resistant, non-toxic mesh is 34” tall. Our dog gate for the front door automatically retracts when the door is closed and does not contain a locking mechanism. (For a locking retractable gate see Retract-A-Gate by Smart Retract.)
  • Hardware Mounted: Simply use the included screws to mount the smart pet door securely to wood, metal, or storm doors. If you ever decide to remove your front door gate for dogs, a little patch and touch up will make the small screw holes unnoticeable again. Or, if you don't want screws, you may be able to use an adhesive, but this would not be as secure and is not recommended.
  • Inward & Outward Doors: This front door dog barrier is unique in that it can extend outward rather than the typical inward, and be installed outside the home rather than inside.
No. 4
Bow Wow Barrier 28-Inch Café Retractable Exterior-Door Barrier for Pets
  • 100% USA Made & Manufactured: Unlike other products that claim to be USA made but parts still come from overseas, Smart Retract is proud to only source high-quality, local parts to support community and create the safest, most secure front door dog gate available.
  • Gate for Front Door: The Bow Wow Barrier mounts to your door and door jamb to stop your dog or cat from running out doors as you collect a delivery or talk to your neighbor. No more crating pets or awkward body barriers needed when you open the door!
  • 28” Wide x 34” Tall: The Bow Wow Barrier expands up to 28” wide when fully opened. The scratch resistant, non-toxic mesh is 34” tall. Our dog gate for the front door automatically retracts when the door is closed and does not contain a locking mechanism. (For a locking retractable gate see Retract-A-Gate by Smart Retract.)
  • Hardware Mounted: Simply use the included screws to mount the smart pet door securely to wood, metal, or storm doors. If you ever decide to remove your front door gate for dogs, a little patch and touch up will make the small screw holes unnoticeable again. Or, if you don't want screws, you may be able to use an adhesive, but this would not be as secure and is not recommended.
  • Inward & Outward Doors: This front door dog barrier is unique in that it can extend outward rather than the typical inward, and be installed outside the home rather than inside.
No. 5
Door Buddy Pet Door Latch for Cats - Grey. Adjustable Cat Door Strap. Dog Proof Litter Box & Feeding Station Without Pet Gate. Most Customizable Cat Door Holder for Interior Door.
  • THE ORIGINAL NO CUT CAT DOOR - Door Buddy’s adjustable door strap for pets is the original cat door alternative that gives cats back their space! No need to cut out an indoor cat door or fight a bulky dog gate with cat door. While cheap cat door holder knock-offs are tempting, Door Buddy door latch is made in the USA and is both durable and effective. NOTE: This version does NOT include a DOOR STOPPER.
  • KEEP DOGS OUT OF LITTER BOX - Door Buddy’s door latch for cats is the easiest way to keep door cracked open for cat while keeping dogs out of the litter box and cat food. Thanks to our extra strong 3M adhesives, Door Buddy installs in seconds and can stop dogs up to 120lb from getting into no-go rooms. Finally, a cat door interior door without any hassles and a dog proof feeding station for cats that doesn't make your cat feel trapped.
  • SIMPLE & EFFECTIVE - A tool-free installation that is simple and works! The 3M adhesives stick to your door and door frame, the adjuster allows you to keep the door cracked open just enough to suit your cat's width, and finally lock the hook into the latch. The strap will flex around the door so it is easy to latch from either side of the door for quick and convenient access. DO NOT install on drywall. For extra motivated dogs, install on the back of your door for a stronger hold.
  • CUSTOMIZABLE & ADJUSTABLE - Door Buddy works on the most door types including bi-fold, sliding, pocket and double doors. Now you can dog proof cat litter boxes and keep dog out cat food no matter the room! With our adjustable mechanism, you can fully customize the width to keep door ajar from 0-6” wide. Adjust to smallest gap to keep cats out or adjust it to fit your cat and keep dogs out of room.
  • MADE IN THE USA - Quality fur-parents deserve quality products. Door Buddy is small business owned, parent invented, and made in the USA. Unlike some other cheaper, less durable and imported cat door stopper straps, Door Buddy adjustable door strap and latch is both affordable and made with superior quality materials. Give our Door Buddy pet door latch a try today and see for yourself why pet owners love it so much.
SaleNo. 6
Retractable Baby Gates with Door 55" Wide Retractable Dog Gate with Pet Door Outdoor Retractable Gate for Dogs Mesh Baby Gate Retractable Pet Gate with Cat Door Retractable Child Gates for Doorways
  • Small Pet Door Design : Our retractable baby gates has a cat door, the size of the cat door is 6*7. It can separate your dog from the cat and prevent your babies from eating the cat's food. Perfect for families with children and multiple pets.
  • Durable Scratch-resistant Mesh : the mesh of the retractable baby gate with cat door is made of soft and durable scratch-resistant mesh, which not only won't bump your child but also can resist pet's claws.
  • Retractable Design : the retractable design allows the mesh to be completely rolled up when not in use and won't take up space in your home. The height of the retractable gate is 33 inches, suitable for 0-55 inch wide openings.
  • One Handed Operation : retractable dog gate with cat door features a one-handed locking and unlocking mechanism. Adults can open the retractable baby gates with one hand, while children can't open the retractable pet gate with cat door.
  • Suitable for Babies and Pets :the retractable pet gate with cat door Works as both an baby gate and a pet gate to providing a safe environment to play. Keep your children and pets out of dangerous areas.
SaleNo. 7
Retractable Dog Gate with Cat Door 55" Wide Retractable Pet Gate with Cat Door Mesh Dog Gate Retractable Baby Gates for Doorway Retractable Puppy Gate for The House Retractable Outdoor Gate for Deck
  • Small Pet Door Design : Our retractable baby gates has a cat door, the size of the cat door is 6*7. It can separate your dog from the cat and prevent your babies from eating the cat's food. Perfect for families with children and multiple pets.
  • Durable Scratch-resistant Mesh : the mesh of the retractable baby gate with cat door is made of soft and durable scratch-resistant mesh, which not only won't bump your child but also can resist pet's claws.
  • Retractable Design : the retractable design allows the mesh to be completely rolled up when not in use and won't take up space in your home. The height of the retractable gate is 33 inches, suitable for 0-55 inch wide openings.
  • One Handed Operation : retractable dog gate with cat door features a one-handed locking and unlocking mechanism. Adults can open the retractable baby gates with one hand, while children can't open the retractable pet gate with cat door.
  • Suitable for Babies and Pets :the retractable pet gate with cat door Works as both an baby gate and a pet gate to providing a safe environment to play. Keep your children and pets out of dangerous areas.
No. 8
Adjustable Door Strap and Latch, Damage-Free Cat Door Latch to Keep Large Dog Out of Litter Box, Economical Alternative of Pet Gates, Basic 1 Pack
  • CAT ACCESS ONLY BUT DOG PROOF: Neobay door strap for cats helps to keep dog out of the Litter Box or Cat Feeder (if the dog is slightly larger than the cat) by use of adjustable door strap and door latches to let the door open properly, the gap is wide enough so cats can easily enter(Flap Dimensions :2.5* 9.5 inches), and narrow enough so large dogs and babies cannot go through. Perfect solution for the Kitty to have privacy.
  • COST-EFFECTIVE CAT GATE AND CAT DOOR: Installs in seconds without tools. Just peel & stick to the door and door frame with 3M adhesive, 𝐁𝐮𝐭 𝐧𝐨𝐭 𝐨𝐧 𝐃𝐫𝐲𝐰𝐚𝐥𝐥 𝐨𝐫 𝐖𝐚𝐥𝐥𝐩𝐚𝐩𝐞𝐫 to prevent paint damage,NO need to cut a permanent hole to install an interior cat door (especially suitable for renters). NO need to install a ponderous pet gate. Neobay cat door strap offers a simpler and more convenient way for cats and dogs to live peacefully together, gives you and your furry pal the freedom you both deserve.
  • UPGRADED DESIGN: Solid alloy is deployed inside of the Plastic Hook to deal with persistent dogs. Enlarged 3M Adhesive area and strap width & length ensure better performance and strength. Added the optional reserved screw holes mainly for Determined Dogs (Mounting screws can withstand greater pulling force).
  • CONVENIENT AND NEAT: Neobay door latch for cat is quite easy to use on standard swinging doors, latch with one hand from inside or outside the door for quick and convenient access. Why struggle with a hassle pet gate or permanent cat door?
  • SPARE ACCESSORY KIT AVAILABLE: Neobay Replacement Accessory Kit (2 Sets) can be purchased separately through Search ASIN B09GJW6R2B

The Ultimate Buying Guide: Keeping Cats In, Keeping Critters Out

You love your feline friend, but sometimes you need a little separation. Maybe you have a dog that bothers the cat, or perhaps you just need to keep your indoor cat safe from outdoor dangers. A dog door designed to keep cats *inside* is a smart solution. This guide helps you choose the best one.

1. Key Features to Look For

When shopping, focus on features that ensure only your intended pets use the door. These features make life easier and safer.

  • Microchip or RFID Technology: This is the gold standard. The door reads the microchip or a special collar tag on your cat. If the cat doesn’t have the tag, the door stays locked. This is the best way to stop neighborhood strays or other pets from entering.
  • Manual Locking System: Look for a door with multiple settings (e.g., In Only, Out Only, Fully Locked). If you need to absolutely ensure your cat stays inside for a few days, use the “In Only” setting.
  • Size and Height: Measure your cat! The door needs to be tall enough for them to pass through comfortably without crouching too much. Too large, and it might let in raccoons or large neighborhood dogs.
  • Weatherproofing Seals: Good seals around the flap keep out drafts, rain, and insects, saving you money on energy bills.

2. Important Materials Matter

The material affects durability and insulation. You want something that lasts a long time, especially if it handles daily use.

Durability and Construction
  • High-Impact Plastic (ABS or Polycarbonate): Most modern doors use strong plastic frames. This material resists cracking, even in cold weather.
  • Metal Flaps vs. Plastic Flaps: Metal flaps are very strong but can be noisy when closing. Thick, flexible plastic or rubberized flaps often offer better insulation and quieter operation.
  • Frame Security: Check how the door installs into your actual door or wall. A robust mounting frame prevents weak points that intruders (animal or human) might exploit.

3. Factors That Improve or Reduce Quality

Not all pet doors are created equal. A few design choices make a big difference in how well the product performs.

Quality Boosters:
  • Energy Efficiency: Doors with dual-pane flaps or magnetic seals offer superior insulation.
  • Easy Programming: If you buy an electronic door, the setup process should be simple. You should be able to teach the door your cat’s chip number quickly.
Quality Reducers:
  • Flap Stiffness: A flap that is too stiff is hard for a smaller cat to push open. This leads to frustration and the cat avoiding the door.
  • Poor Sensor Range: If the electronic sensor only reads the chip when the cat is perfectly centered, it causes constant failures, forcing you to use the manual override often.

4. User Experience and Use Cases

Think about where and how you will use this door. Your experience will depend on the installation location.

Installation Scenarios:
  • Standard Door Installation: This is common. The door replaces a section of your wooden or metal exterior door. Ensure the door thickness matches the door panel thickness provided by the manufacturer.
  • Wall Installation: If you install the door through a wall, you need a special tunnel extension kit. These kits ensure the tunnel is deep enough to prevent drafts right through the wall cavity.
Keeping Cats In:

The primary use case here is safety. If your cat is an indoor-only cat, you use the “Out Only” lock setting. This allows them to go into a secure, enclosed catio or screened porch but prevents them from accessing the main yard where predators or traffic exist. When you are ready for them to come back in, you simply switch the setting to “In Only” or unlock it briefly for re-entry.


10 Frequently Asked Questions (FAQ)

Q: Will a cat door let neighborhood dogs into my house?

A: If you buy a standard flap door, yes, a determined dog might fit. To prevent this, you absolutely need a door that uses microchip or RFID technology. These only unlock for your registered cat.

Q: Can I install these doors in sliding glass doors?

A: Yes, specialized inserts are available for sliding doors. They usually replace a section of the glass door panel. These are generally easier to install than cutting a hole in a solid door.

Q: How long does the battery last in an electronic door?

A: Battery life varies widely, but most good models last between six and twelve months. Many doors have a low battery indicator light, so you know when to change them.

Q: Do I need a special collar tag for the electronic door?

A: If the door uses RFID (Radio Frequency Identification), yes, it requires a special battery-free tag that clips onto the collar. Microchip doors read the chip already implanted in your cat, so no extra tags are needed.

Q: Are these doors hard to clean?

A: Most flaps wipe down easily with a damp cloth. If you choose a model with complex locking mechanisms, check reviews to ensure the inner workings do not trap too much dust or pet hair.

Q: What if my cat is afraid of the flap noise?

A: Some cats are scared by the sound of the magnetic lock snapping shut. You can encourage them by taping the flap open temporarily. This lets them get used to the opening size before the lock mechanism starts working.

Q: What is the difference between a pet door and a cat door?

A: A cat door is generally smaller and lower to the ground. A dog door might be too big and could allow larger outdoor animals to enter if you use the wrong model.

Q: How secure are these doors against intruders?

A: Electronic doors are very secure when locked because the physical barrier is robust, and the locking mechanism only releases for your pet. Always ensure the manual lock is engaged when leaving for long vacations.

Q: Do I need a professional to install the door?

A: Simple flap doors can often be installed by a handy homeowner following clear instructions. Electronic doors require wiring or precise cutting, so many people hire a carpenter or handyman for those types.

Q: What if my cat needs to go out sometimes, but I want them inside overnight?

A: Use the manual settings! Set the door to “Out Only” during the day. Before you go to bed, switch the setting to “In Only.” This ensures they can always return home but cannot leave after dark.