https://opensourcebridge.scien....ce/wiki/Fitting_a_Ca
A cat flap on a door allows your pet to go in and out of the house without you needing to open it. These doors come in different sizes to accommodate dogs and cats. They also have features that keep out draughts as well as unwanted creatures. It is best to introduce your pet to the door prior to installing it. It will be easier to make them comfortable with the shape, size and movement. Easy to install Cat flaps can be placed in a variety of locations - you can have one in your garage door or laundry room to give your pets access