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Cats are fond of watching TV from windows. This is sometimes called cat television. It's a form of entertainment that is often instinctive. You can install glass window inserts that have cat flaps on existing doors or windows. They can be installed in double-glazed. Easy to install Cat flaps can be affixed to a variety of glass including french doors, patios, bifolds, and single-glazed windows. These are perfect for people who do not want to cut into their door or wall to allow access to their pet through a window. It is important to know, however,