A cat flap in action.A wall-mounted flap with access tunnel.
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Cat Doors & Flaps

A cat flap (British English) or cat door (American English) is a hinged flap set into a door, wall or window to allow cats to enter and exit a house on their own without needing a human to open the door. Doggie doors similarly exist for dogs. more...

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Cat flaps are popular in some countries, particularly the United Kingdom where it is believed that about 90% of cats have access to the outdoors.

Etymology

The Oxford English Dictionary records the first use of cat flap in 1957 and the first use of cat door in 1959. The Webster's Dictionary of English lists cat door as a synonym of cat flap.

Features

The simplest cat flaps are just weighted flaps, but these may be blown open or may make a rattling noise in the wind. A magnet on the flap can hold the door in place and allow access. Some flaps also have adjustable catches to restrict the opening of the flap in one direction or the other — for example to allow the cat to come in, but not go out again. More sophisticated flaps have electromagnetic catches that can detect a matching permanent magnet worn on the cat's collar that will unlock the flap as the cat approaches, thus preventing any other animals from using the flap and entering the house. Flaps with infrared locks open only when a collar-mounted device transmits the correct code to the flap, allowing cat owners to have multiple flaps that different cats can use.

Some cats can circumvent one-way flap-mounted-in-flap designs by pulling at the bottom of the inner flap. Cats can carry rodents into a dwelling through flaps; one cat owner has gone to technological extremes to solve this problem, employing a webcam and image recognition software .

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 cats prefer to use a transparent flap, so that they can be sure there is nothing threatening outside before leaving the safety of the home.

Some very young children are small enough to fit through a cat flap and get themselves outside. As a precaution, cat flaps should be secured when very small mobile children are in the house.

The invention of the cat flap is often attributed to Sir Isaac Newton in the seventeenth century.

Read more at Wikipedia.org


The Purrfect Cat Hole For Your Pet- For Interior Doors $39.99 Cat Veranda with Lockable Entry Flap $99.95
Ideal Chubby Cat Door Flap $10.00 Staywell Infra-Red Collaar Key Pack*Nib* Free Shipping $11.99
Staywell 500 Series InfraRed Collar for Cat Door Yellow $2.50 Staywell 500 Series InfraRed Collar for Cat Door Pink $2.50
Petsafe Cat Flap New In Plastic Complete $4.99 6" Portable Uv Blacklight Black Light urine Detector Nb $10.99
PetSafe Cat Windoor Window Cat Flap Cat Door $69.95 Staywell Original Small Plastic Dog or Cat Door $21.99
Petsafe Cat Windoor Window Door New $78.99 Rfa-102-11 Petsafe Quick Fit Replacement Flap Large Nib $23.89
Rfa-103-11 Petsafe Quick Fit Replacement Flaps Medium $19.89 Rfa-104-11 Petsafe Quick Fit Replacement Flap Small Nib $16.89
Pac11-11040 Petsafe Freedom Replacement Door Flap Xl $49.89 Pac11-11039 Petsafe Freedom Replacement Door Flap Large $36.89
Pac11-11038 Petsafe Freedom Replacement Flap Medium Nib $28.89 Pac11-11037 Petsafe Freedom Replacement Door Flap Small $19.89
Petsafe A04026-4-11 Classic Door Replacement Flap X-Lg $50.89 Petsafe 4-0113-11 Classic Door Replacement Flap Large $32.89
Petsafe 4-0111-11 Classic Door Replacement Flap Medium $21.89 New Pet Safe Cat Dog Door Lockable Flap Sealed Box 12Lb $24.99
Let Meow't Easy Mount Window Cat Door 72475 $44.99 Petsafe Cat Windoor Cat Removable Window Door $74.95
PetSafe Cat Windoor - Removable Pet Door $74.95 *Ideal Lockable Cat Flap* 4-Way Lock - 6 1/4" Nib $9.99
Petsafe Lockable Cat Flap- New In Package! Great Price! $9.99 Kitty Cats Cat-Breeze Blocker Draft Stopper~Free S/H! $29.95
Insta Fit Pet Door $9.99 Brand New Pet Safe Cat Dog Door Lockable Flap 12lbs $24.99
Pet Door - Staywell Infrared Cat Door $125.00 Pet Door - Staywell 4 Way Magnetic Locking Cat Door $69.99
Pet Door - Staywell 4 Way Locking Cat Door for Thick Do $49.99 Pet Door - Staywell 4 Way Locking Cat Door for Big Cats $46.95
Pet Door - Ideal Pet Door for Screen Doors $35.99 Pet Door - Ideal Cat Flap Cat Door $34.99
Cat Hole - Interior Cat Door - Hide the litter box! $39.99 Cat Door With Tunnel New In Package No Reserve $9.99
Petsafe Cat Dog Lockable Magnetic Locking Door 2F17 $6.99 Petsafe Staywell Big Cat 4-way door $15.00
New Staywell 4 Way Locking Cat Dog Flap Door $14.99 Petsafe Cat Flap door New Fast Free Ship entry $19.88
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Prices current as of last update, 11/21/08 5:28pm.


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