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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Medium Freedom Dog Doors Ppa00-10860Medium Freedom Dog Doors Ppa00-10860 Extra Smart Key for Small or Large Electronic Dog DoorExtra Smart Key for Small or Large Electronic Dog Door $23.95
New Staywell Small Pet Door PpdsNew Staywell Small Pet Door Ppds $21.49 Petsafe Medium Dog|Pet Door. Classic Aluminum Frame-NibPetsafe Medium Dog|Pet Door. Classic Aluminum Frame-Nib $34.99
PetSafe Small SmartDoor Electronic Pet Dog Door Up15lbPetSafe Small SmartDoor Electronic Pet Dog Door Up15lb $89.95 Perfect Pet by Ideal Super Large Telescoping FramePerfect Pet by Ideal Super Large Telescoping Frame
PetSafe Medium Extreme Weather Dog Door PetSafe Medium Extreme Weather Dog Door Extra Large Patio Pet Door Color: WhiteExtra Large Patio Pet Door Color: White
Medium PetSafe Plastic Dog Door Ppa00-10959Medium PetSafe Plastic Dog Door Ppa00-10959 Medium White Aluminum Pet DoorMedium White Aluminum Pet Door
Large Alarm Slide-PetSafe "Pet Door"- El-2-11 Pet DoorLarge Alarm Slide-PetSafe "Pet Door"- El-2-11 Pet Door New Ideal Ruff Weather Pet Door 5" x 9" Fame OnlyNew Ideal Ruff Weather Pet Door 5" x 9" Fame Only $0.99
Extra Large Modular Patio Panel Pet Door Color: MillExtra Large Modular Patio Panel Pet Door Color: Mill Brand New Pet Safe Plastic Pet Door Size MediumBrand New Pet Safe Plastic Pet Door Size Medium $29.99
Ideal Pet @ Deluxe Dog Pet Door Aluminum new 1656 freeIdeal Pet @ Deluxe Dog Pet Door Aluminum new 1656 free Petsafe Freedom Aluminum Pet Door- New, Open Box!Petsafe Freedom Aluminum Pet Door- New, Open Box! $54.99
Bronze Brown Petsafe Large Dog Door Patio Sliding GlassBronze Brown Petsafe Large Dog Door Patio Sliding Glass $99.95 PetSafe Medium White Quick Fit Dog Pet Door P2-Mw-11 *PetSafe Medium White Quick Fit Dog Pet Door P2-Mw-11 * $34.99
Super Large White Aluminum Pet DoorSuper Large White Aluminum Pet Door Tubby Kat with 4 Way Lock Pet DoorTubby Kat with 4 Way Lock Pet Door
24" Safety Indoor Metal Mesh Wood Sliding Dog Pet Gate24" Safety Indoor Metal Mesh Wood Sliding Dog Pet Gate $9.99 Petsafe Smart Key For Smart Door Smartkey NewPetsafe Smart Key For Smart Door Smartkey New
PetSafe Large Extreme Weather Dog Door PetSafe Large Extreme Weather Dog Door Pet Safe Dog Door For Small Doggies Up to 12LbsPet Safe Dog Door For Small Doggies Up to 12Lbs $15.00
Large PetSafe Quick Fit Pet Door P2-Lw-11Large PetSafe Quick Fit Pet Door P2-Lw-11 Ideal Dog/Pet Door Sz Extra Large 10.5"X15" Flap SizeIdeal Dog/Pet Door Sz Extra Large 10.5"X15" Flap Size $10.49
PetSafe Xl Classic Dog Pet Door Satin Frame Af50-201-11PetSafe Xl Classic Dog Pet Door Satin Frame Af50-201-11 $99.95 Bnib PetSafe Easy Fit Pet cat dog Door Small 1-12 lbs!Bnib PetSafe Easy Fit Pet cat dog Door Small 1-12 lbs! $24.99
PetSafe Large Plastic Dog Pet Door Ppa00-10960 Up 100lbPetSafe Large Plastic Dog Pet Door Ppa00-10960 Up 100lb $55.99 Pets Stop Royal Weave Free Standing Dog Gate in MochaPets Stop Royal Weave Free Standing Dog Gate in Mocha
Power Pet Fully Automatic Door - 8" x 11" Opening NewPower Pet Fully Automatic Door - 8" x 11" Opening New brand new unopened petsafe xtra large pet door 12-220lbbrand new unopened petsafe xtra large pet door 12-220lb $30.00
Petsafe Locking Extreme Weather Dog Cat Pet Door SmallPetsafe Locking Extreme Weather Dog Cat Pet Door Small $57.99 Large SmartDoor Electronic Dog Door Ppa11-10709Large SmartDoor Electronic Dog Door Ppa11-10709
Perfect Pet by Ideal Extra Large All Weather Pet DoorPerfect Pet by Ideal Extra Large All Weather Pet Door PetSafe Large Classic Dog Pet Door Satin Af30-201-11PetSafe Large Classic Dog Pet Door Satin Af30-201-11 $69.95
Pet Door Xl 10.5" X 15"Pet Door Xl 10.5" X 15" Pet Safe Extreme Weather Door Size: MediumPet Safe Extreme Weather Door Size: Medium
PetSafe Replacement Flap for Quick Fit Door Size LargePetSafe Replacement Flap for Quick Fit Door Size Large PetSafe Medium Quick Fit Pet Door For pets to 40 PoundsPetSafe Medium Quick Fit Pet Door For pets to 40 Pounds $34.50
Medium PetSafe Quick Fit Pet Door P2-Mw-11Medium PetSafe Quick Fit Pet Door P2-Mw-11 PetSafe Large Quick Fit Pet Door For pets to 100 PoundsPetSafe Large Quick Fit Pet Door For pets to 100 Pounds $49.75
SmartDoor Electronic Dog Door Ext. SmartKey Pac11-11045SmartDoor Electronic Dog Door Ext. SmartKey Pac11-11045 New InstaFit Insulated Aluminum Small Dog Cat Pet Door New InstaFit Insulated Aluminum Small Dog Cat Pet Door $9.99
Medium Pet Door with Telescoping FrameMedium Pet Door with Telescoping Frame 32" Walk Through 3 Free Standing Pet Gate in Mahogany32" Walk Through 3 Free Standing Pet Gate in Mahogany
Dog Door Doggie Pet Safe Small 12lbs. cats toy doggy smDog Door Doggie Pet Safe Small 12lbs. cats toy doggy sm Petsafe Large Aluminum Frame Dog / Pet Door 1-100 lbsPetsafe Large Aluminum Frame Dog / Pet Door 1-100 lbs $29.99
20" All Wood Small Free Standing Pet Gate Warm White20" All Wood Small Free Standing Pet Gate Warm White Pet Safe Classic Pet Door in White Size: LargePet Safe Classic Pet Door in White Size: Large
Ideal Fast Fit Patio Pet Door/Petdoor=Al​L Sizes Ideal Fast Fit Patio Pet Door/Petdoor=Al​L Sizes $100.00 New 3M Heavy Duty Pet Wipes Perfect For The Glove Box!New 3M Heavy Duty Pet Wipes Perfect For The Glove Box! $12.99
Ppa11-10917 -PetSafe Wall Entry Dog Door Large *Ppa11-10917 -PetSafe Wall Entry Dog Door Large * $111.95 New Petsafe Easyfit Pet Dog Door White Medium 40 lbsNew Petsafe Easyfit Pet Dog Door White Medium 40 lbs $29.99
Small White Aluminum Pet DoorSmall White Aluminum Pet Door Petsafe Pet Door Replacement Outside Plastic NewPetsafe Pet Door Replacement Outside Plastic New $14.99
Large Alarm Slide-PetSafe "Quick/Easy Fit" Pet DoorLarge Alarm Slide-PetSafe "Quick/Easy Fit" Pet Door Ideal Pet Door Medium "new in box"Ideal Pet Door Medium "new in box" $59.99
PetSafe Plastic Pet Door, Premium WhitePetSafe Plastic Pet Door, Premium White $14.99 Clear Plastic Sheet Dog Door 8" Wide x 3yd x 75milClear Plastic Sheet Dog Door 8" Wide x 3yd x 75mil $22.00
Ideal Sliding Glass Patio Dog Pet Door Large Ideal Sliding Glass Patio Dog Pet Door Large $51.00 Perfect Pet by Ideal Small All Weather Pet DoorPerfect Pet by Ideal Small All Weather Pet Door
Perfect Pet by Ideal Vip Extra Large Pet DoorPerfect Pet by Ideal Vip Extra Large Pet Door Ideal "Fast Fit Pet Dog Patio Door Sz Medium FlapIdeal "Fast Fit Pet Dog Patio Door Sz Medium Flap
96" Deluxe Pet Panels for Sliding Glass Doors Medium96" Deluxe Pet Panels for Sliding Glass Doors Medium Havahart Small Pet Door See-thru Flap Magnetic Seal NibHavahart Small Pet Door See-thru Flap Magnetic Seal Nib $19.99
Small Modular Patio Panel Pet Door Color: WhiteSmall Modular Patio Panel Pet Door Color: White "Sergeant's" Large Size Pet Door"Sergeant's" Large Size Pet Door $24.99
Clear Lacquer Solid Wood 4 Panels Folding Dog Pet GateClear Lacquer Solid Wood 4 Panels Folding Dog Pet Gate $59.00 Large Freedom Dog Door Ppa00-10861Large Freedom Dog Door Ppa00-10861
Dog Door doggy,doggie,pe​t up 100lbs Large easy installDog Door doggy,doggie,pe​t up 100lbs Large easy install $69.99 Perfect Pet Cat Flap Patio PetDoor Color: MillPerfect Pet Cat Flap Patio PetDoor Color: Mill
Pet Screen Door For Small Dog or CatPet Screen Door For Small Dog or Cat $20.00 PetSafe Small Ultimate Dog Doors Ppds-11PetSafe Small Ultimate Dog Doors Ppds-11
PetSafe Ppa00-10859 Small Door - White 9 3/4" x 13 1/2"PetSafe Ppa00-10859 Small Door - White 9 3/4" x 13 1/2" Large Dog Door For Sliding Glass DoorLarge Dog Door For Sliding Glass Door $19.99
Staywell Small Pet Door, Lockable w/Rigid See-Thru FlapStaywell Small Pet Door, Lockable w/Rigid See-Thru Flap $16.00 Pet Safe Classic Replacement Flap Size: X-LargePet Safe Classic Replacement Flap Size: X-Large
Pet Safe Quick Fit Replacement Flap Size: SmallPet Safe Quick Fit Replacement Flap Size: Small $16.95 Medium All Weather Door with Protector Alarm SlideMedium All Weather Door with Protector Alarm Slide
Protector Series All Weather Dual Flap Xx Lg Dog DoorProtector Series All Weather Dual Flap Xx Lg Dog Door $239.95 PetSafe Aluminum Door Entry Pet Door Doggie Dog LargePetSafe Aluminum Door Entry Pet Door Doggie Dog Large $69.99
Petsafe Deluxe Sliding Patio Glass Door Pet Dog Door SmPetsafe Deluxe Sliding Patio Glass Door Pet Dog Door Sm Cat Door with 4 Way Lock Pet DoorCat Door with 4 Way Lock Pet Door
Swinging pet screen door small dog or cat NibSwinging pet screen door small dog or cat Nib $0.99 Petsafe Small Aluminum Pet Door 1-15lb 10859Petsafe Small Aluminum Pet Door 1-15lb 10859
Small Pet Door with Telescoping FrameSmall Pet Door with Telescoping Frame 20" All Wood Large Free Standing Pet Gate in Black20" All Wood Large Free Standing Pet Gate in Black
Petsafe Smartkey Smart Door Batteries Pac11-11045Petsafe Smartkey Smart Door Batteries Pac11-11045 $18.88 SmartDoor Electronic Pet Door FlapSmartDoor Electronic Pet Door Flap $159.97
X Large All Weather Door Protector Alarm SlideX Large All Weather Door Protector Alarm Slide Pets Stop Royal Weave Dog Gate Mocha Large 32"x34"x40"Pets Stop Royal Weave Dog Gate Mocha Large 32"x34"x40"
Ruff Weather Wall Kit for Pet Dog Cat Doors Sz MediumRuff Weather Wall Kit for Pet Dog Cat Doors Sz Medium Small Tall Patio Pet Door Color: MillSmall Tall Patio Pet Door Color: Mill
Large PetSafe Plastic Dog Door Ppa00-10960Large PetSafe Plastic Dog Door Ppa00-10960 New Staywell Wht Alum Med Pet Door Ppa00-10860New Staywell Wht Alum Med Pet Door Ppa00-10860 $77.99
New ~ Mini Magnador ~ Small 6" x 8" Door ~ Pet Dog CatNew ~ Mini Magnador ~ Small 6" x 8" Door ~ Pet Dog Cat $20.99 PetSafe Universal Pet Door Install Kit Pac11-10863PetSafe Universal Pet Door Install Kit Pac11-10863 $22.99
740263 Tuffi-Dor, SmallPet Door, For Small Cats & Dogs740263 Tuffi-Dor, SmallPet Door, For Small Cats & Dogs $30.99 PetSafe Xl Dog Door for a Patio Door - Pet Safe - New!PetSafe Xl Dog Door for a Patio Door - Pet Safe - New!
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Prices current as of last update, 07/29/10 7:45pm.

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