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A cat flap is a tiny door that allows your pet to arrive and leave the home as they want. It can be incorporated into doors, windows and even walls. It is opened when a cat pushes through a section of its body. Microchip cat flaps recognise your cat's unique microchip to unlock the door. Infrared and magnet flaps require that your cat wears a collar with an infrared or magnet device to activate them. What is a flap for a cat? A cat flap is an opening inside an opening or window that allows your pet to en