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A cat flap is a door that allows your pet to leave and enter the house whenever they want. It can be incorporated to windows, doors and even walls. It opens when a cat pushes through a section of its body. Microchip cat flaps unlock the door by recognizing your cat's unique chip. Infrared and magnet flaps require that your cat wear a collar equipped with an infrared or magnetic device to activate them. What is a cat flap? A cat flap is an opening inside an opening or window that allows your pet to get in and o