Three Little Pigs is a fairy tale featuring talking animals. Printed versions date back to the 1840s, but the story itself is thought to be much older. The phrases used in the story, and the various morals which can be drawn from it, have become enshrined in western culture.
On the Aarne-Thompson classification system, it is a type 124. The tale of the Three Little Pigs and the Big Bad Wolf was included in Nursery Rhymes and Nursery Tales by James Orchard Halliwell-Phillipps, first published about 1843. The story in its arguably best-known form appeared in English Fairy Tales by Joseph Jacobs, first published in 1890 and crediting Halliwell as his source.
The story begins with the title characters being sent out into the world by their mother, to "seek their fortune". This follows a theme, common to fairy tales, in which protagonists leave the familiar abode of their youth and its protection, venturing into an outside existence which turns out to be fraught with danger. The first little pig builds a house of straw, but a wolf blows it down and eats the pig.
The second pig builds a house of sticks, but with the same ultimate result. Each exchange between wolf and pig features ringing proverbial phrases, namely: