A cat flap in action.A wall-mounted flap with access tunnel.

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Dog Doors

A cat flap (also known as a doggie door or pet door) is a hinged flap set into a door, wall or window to allow cats, dogs, or other domestic pets to enter and exit a house on their own without needing a human to open the door. more...

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They are very popular with cat owners, many of whom like to encourage their cats' natural independence by letting them come and go at will — particularly in the United Kingdom where it is believed that about 90% of all cats (including ferals) have access to the outdoors, many of these via cat flaps (). Flaps for most dogs must be bigger and therefore are often constructed differently; except in rural areas they tend to give access to fenced-in yards or gardens rather than the neighborhood at large.

The simplest are just weighted flaps, but these can have problems with wind blowing open the flap or making a rattling noise. A magnet on the flap addresses this issue by holding the door in place when not in use, but not so securely as to prevent access. Sometimes a flap will also have adjustable catches to restrict the opening of the flap in one direction or the other — for example to allow the animal to come in, but not go out again. More sophisticated flaps have electromagnetic catches that can detect a matching permanent magnet worn on the animal's collar and unlock the flap as the animal approaches, thus preventing any other animals using the flap to enter the house.

Devotees suggest a pet door should be set at a height so that the bottom of the opening is just a little lower than the belly of the animal when standing. Many animals prefer to use a flap with a transparent flap, so that they can be sure there is nothing threatening outside before leaving the safety of the home.

The invention of the cat flap is often attributed to Sir Isaac Newton in the seventeenth century; this story, however, is usually related (, for example) without any sources to support it.

Read more at Wikipedia.org


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Trixie Vinyl Dog Door Flap, Fits 9.4 X 14.2-In Wooden Dog House Opening, ReplaceTrixie Vinyl Dog Door Flap, Fits 9.4 X 14.2-In Wooden Dog House Opening, Replace $11.01 Extra Large Pet Aluminum Screen Door Dog Puppy Locking Magnetic Flap Gate 2 SizeExtra Large Pet Aluminum Screen Door Dog Puppy Locking Magnetic Flap Gate 2 Size $119.99 to
New ListingDog Door for medium Size Dog W/ 2 Sliding Lock PanelsNew ListingDog Door for medium Size Dog W/ 2 Sliding Lock Panels $50.00 Cat Dog Pet Door S-Xl Size Magnetic Adjustable Door Locking Cat Dog Free AccessCat Dog Pet Door S-Xl Size Magnetic Adjustable Door Locking Cat Dog Free Access $14.99 to
Aboron Aluminum Large Dog Door for Sliding Glass Door 80.7'-86.5' AdjustableAboron Aluminum Large Dog Door for Sliding Glass Door 80.7'-86.5' Adjustable $128.99 to Ideal Pet Products Replacement Flap Plastic/Deluxe Dog Door New Style-All SizesIdeal Pet Products Replacement Flap Plastic/Deluxe Dog Door New Style-All Sizes $27.15 to
Dog Door Replacement Flaps, Doghouse or Kennel Door Flap, Pet Products and SupplDog Door Replacement Flaps, Doghouse or Kennel Door Flap, Pet Products and Suppl $22.21 Naizea Doggy Door for Sliding Glass Doors Adjustable Height 74.8"-86.5" 2 SizesNaizea Doggy Door for Sliding Glass Doors Adjustable Height 74.8"-86.5" 2 Sizes $128.99 to
Dogwalk Superior Glass Fitting Dog Door SlimlineDogwalk Superior Glass Fitting Dog Door Slimline $84.99 PetSafe Never Rust Dog and Cat Door, Large, For Pets Up To 100 lb, PaintablePetSafe Never Rust Dog and Cat Door, Large, For Pets Up To 100 lb, Paintable $48.71
Ideal Pet Products Designer Series Ruff Weather Dog Door-All SizesIdeal Pet Products Designer Series Ruff Weather Dog Door-All Sizes $82.35 to Ideal Pet Products Ruff-Weather Dog Door Wall Kit-All SizesIdeal Pet Products Ruff-Weather Dog Door Wall Kit-All Sizes $28.13 to
Ferplast Swing 1 Pet Door Small Dog Or CatFerplast Swing 1 Pet Door Small Dog Or Cat $25.00 New ListingNever Rust Plastic Doggie Door for in Interior and Exterior Doors, Walls MediumNew ListingNever Rust Plastic Doggie Door for in Interior and Exterior Doors, Walls Medium $33.99
New ListingPetsafe Aluminum Pet Dog or Cat Door Small 1-15 lb's White Ppa00-10859 NibNew ListingPetsafe Aluminum Pet Dog or Cat Door Small 1-15 lb's White Ppa00-10859 Nib $37.94 Classicmacher White Frame Dog Doors for Medium Dogs Up to 40 Lbs (white)Classicmacher White Frame Dog Doors for Medium Dogs Up to 40 Lbs (white) $44.95
Pet Products 2-Way Locking Dog Door Medium to X-Large Dogs WhitePet Products 2-Way Locking Dog Door Medium to X-Large Dogs White $47.82 28"x18" Large Aluminum Pet Door Dog Cat Magnetic Lockable Flap Screen Gate Frame28"x18" Large Aluminum Pet Door Dog Cat Magnetic Lockable Flap Screen Gate Frame $114.90
Mavricflex Weatherproof Dog Door for Dogs Up to 100lbs Magnetic Double FlapsMavricflex Weatherproof Dog Door for Dogs Up to 100lbs Magnetic Double Flaps $69.00 Dog Mate Large Dog DoorsDog Mate Large Dog Doors $69.41
Dragon Pet Door for Sliding Door | Small Single Flap, 77.25" - 80.25" HeightDragon Pet Door for Sliding Door | Small Single Flap, 77.25" - 80.25" Height $90.00 Pet Door Dog Cat Magnetic Lockable Sliding Screen Flap Puppy Wall Entry Gate S/MPet Door Dog Cat Magnetic Lockable Sliding Screen Flap Puppy Wall Entry Gate S/M $25.99 to
PetSafe Doggy Door for Sliding Glass Doors, Xl Size, Adjustable 75.875"-81"PetSafe Doggy Door for Sliding Glass Doors, Xl Size, Adjustable 75.875"-81" $159.76 Ideal Pet Products Ruff Weather All Climate Medium Pet Door, 7.25"x 13" Flap NibIdeal Pet Products Ruff Weather All Climate Medium Pet Door, 7.25"x 13" Flap Nib $55.00
18"x28" Aluminum Large Pet Dog Door Flap Magnetic Locking Screen Wall Gate Frame18"x28" Aluminum Large Pet Dog Door Flap Magnetic Locking Screen Wall Gate Frame $114.90 4-Way Medium Small Large Pet Cat Puppy Dog Magnetic Lock Lockable Safe Flap Door4-Way Medium Small Large Pet Cat Puppy Dog Magnetic Lock Lockable Safe Flap Door $20.74
45"-50" Window Sash Pet Cat Dog Door 10 1/2" x 15"45"-50" Window Sash Pet Cat Dog Door 10 1/2" x 15" $295.00 13.25 in. L x 20.25 in. H Extra-Large Plastic Door For Flat Roof Dog House13.25 in. L x 20.25 in. H Extra-Large Plastic Door For Flat Roof Dog House $12.19
Dog Pet Door Replacement Flap Compatible With Pet safe 12 7/8” X 8 1/8” MediumDog Pet Door Replacement Flap Compatible With Pet safe 12 7/8” X 8 1/8” Medium $16.33 Ideal Pet Products Original Plastic Pet Dog Door-All SizesIdeal Pet Products Original Plastic Pet Dog Door-All Sizes $37.75 to
Dog Cat Magnetic Flap Screen Door Pet Puppy Magnetic Lockable Entry Gate FrameDog Cat Magnetic Flap Screen Door Pet Puppy Magnetic Lockable Entry Gate Frame $25.99 Weatherproof Dog Door with Double Sliding Lock Panel, Energy Efficient RuggedWeatherproof Dog Door with Double Sliding Lock Panel, Energy Efficient Rugged $69.00
Large Pet Door Lockable Dog Cat Magnetic Flap Screen Gate Wall Frame 14"x20"Large Pet Door Lockable Dog Cat Magnetic Flap Screen Gate Wall Frame 14"x20" $111.99 Large Medium Pet Dog Cat Door Flap Magnetic Lockable Sliding Screen Gate FrameLarge Medium Pet Dog Cat Door Flap Magnetic Lockable Sliding Screen Gate Frame $21.84 to
Dog/Pet Door Flap Compatible with Petsafe Measures 8 1/8 X 12 7/8 Pac11-11038Dog/Pet Door Flap Compatible with Petsafe Measures 8 1/8 X 12 7/8 Pac11-11038 $17.50 Large Dog Pet Door Replacement Flap Compatible with Petsafe 16 7/8” X 10 1/8”Large Dog Pet Door Replacement Flap Compatible with Petsafe 16 7/8” X 10 1/8” $18.99
Trixie Natura Vinyl Dog Door Flap, Fits 13.4 x 20.5-in Dog House Opening, ReplacTrixie Natura Vinyl Dog Door Flap, Fits 13.4 x 20.5-in Dog House Opening, Replac $13.76 New ListingPet Door for Cats and Dog, Cat Flap Interior Exterior WhiteNew ListingPet Door for Cats and Dog, Cat Flap Interior Exterior White $17.08
Trixie Pet Products 2-Way Locking Dog Door, Medium to X-Large Dogs, WhiteTrixie Pet Products 2-Way Locking Dog Door, Medium to X-Large Dogs, White $45.74 PetSafe Extreme Weather Aluminum Pet Dog Door with 3 Flaps Insualtion -New ModelPetSafe Extreme Weather Aluminum Pet Dog Door with 3 Flaps Insualtion -New Model $194.95
Weatherproof Dog Door Extra Medium M Double Sliding Lock Panel Energy EfficientWeatherproof Dog Door Extra Medium M Double Sliding Lock Panel Energy Efficient $33.98 New ListingPetSafe Sliding Glass Door Doggy Door 75 7/8" to 81"- Large, BronzeNew ListingPetSafe Sliding Glass Door Doggy Door 75 7/8" to 81"- Large, Bronze $129.00
Slsy Dog Door for Sliding Glass Door Xl Large Doggy Door for Sliding Door InsertSlsy Dog Door for Sliding Glass Door Xl Large Doggy Door for Sliding Door Insert $138.99 <span role=heading aria-level=3>Dog Door for Dogs, White Frame Door for Dogs and Pets, Large Mattle BlackDog Door for Dogs, White Frame Door for Dogs and Pets, Large Mattle Black $92.66
Medium Dog Door for Door, Heavy Duty Dog Door with Aluminum FrameMedium Dog Door for Door, Heavy Duty Dog Door with Aluminum Frame $44.95 27"x17" Aluminum Large Dog Door Pet Cat Magnetic Lockable Flap Screen Gate Xl27"x17" Aluminum Large Dog Door Pet Cat Magnetic Lockable Flap Screen Gate Xl $108.29
14"x20" Aluminum Pet Large Dog Door Doggy Magnetic Flap Locking Screen Wall Gate14"x20" Aluminum Pet Large Dog Door Doggy Magnetic Flap Locking Screen Wall Gate $111.99 PetSafe Extreme Weather Pet Door White Medium - Durable Dog Door Ppa00-10985PetSafe Extreme Weather Pet Door White Medium - Durable Dog Door Ppa00-10985 $98.95
4 Way Pet Door Cat Puppy Dog Magnetic Lock Lockable Safe Flap Door Frame Abs4 Way Pet Door Cat Puppy Dog Magnetic Lock Lockable Safe Flap Door Frame Abs $11.99 Trixie Vinyl Dog Door Flap, Fits 13.2 X 20.5-In Wooden Dog House Opening, ReplacTrixie Vinyl Dog Door Flap, Fits 13.2 X 20.5-In Wooden Dog House Opening, Replac $13.03
4 Way Locking Pet Cat Puppy Dog Magnetic Flap Door Entry & Exit Safe Gate Frame4 Way Locking Pet Cat Puppy Dog Magnetic Flap Door Entry & Exit Safe Gate Frame $22.85 47" Heavy Duty Dog Crate Iron Cage Kennel with Lockable Wheels & Double Doors47" Heavy Duty Dog Crate Iron Cage Kennel with Lockable Wheels & Double Doors $180.95
Medium Dog Door for Door, Doggy Door with Aluminum Frame, 3 Magnetic Flaps, MetaMedium Dog Door for Door, Doggy Door with Aluminum Frame, 3 Magnetic Flaps, Meta $105.99
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Prices current as of last update, 12/28/24 9:27pm.

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