A pet door or pet flap (also referred to in more specific terms, such as cat flap or dog door a.k.a. doggie door) is a small portal in a wall, window or human door to allow pets to enter and exit a house (or other structure) on their own without needing a person to open the door. Originally simple holes, the modern form is a hinged and often spring-loaded panel or flexible flap, and some are electronically controlled. They offer a degree of protection against wind, rain, and larger-bodied intruders entering the dwelling. Similar hatches can let dogs through fences at stiles. A related concept is the pet gate, which is easy for humans to open but acts as a secure pet barrier.
Read more about Dog Door: Purpose, Features, History, Electronic Pet Doors, Patio Door Pet Flaps, Dog Stiles, Pet Gates
Famous quotes containing the words dog and/or door:
“The black dog gets the food; the white dog gets the blame.”
—Chinese proverb.
“You there, I here,
With just the door ajar
That oceans are,
And prayer,
And that pale sustenance,
Despair!”
—Emily Dickinson (1830–1886)