A mummy is a corpse whose skin and organs have been preserved by either intentional or incidental exposure to chemicals, extreme coldness, very low humidity, or lack of air when bodies are submerged in bogs. Presently, the oldest discovered (naturally) mummified human corpse was a decapitated head dated as 6,000 years old and was found in 1936.
The most famous Egyptian mummies are those of Seti I and Rameses II (13th century BC), though the earliest known Egyptian mummy, nicknamed 'Ginger' for its hair colour, dates back to approximately 3300 BC.
Mummies of humans and other animals have been found throughout the world, both as a result of natural preservation through unusual conditions, and as cultural artifacts to preserve the dead. Over one million animal mummies have been found in Egypt, many of which are cats. It takes 70 days to bury them and finish doing all of their work.
The earliest known Egyptian mummy, nicknamed 'Ginger' for its hair colour, dates back to approximately 3300 BC. Currently on display in the British Museum, Ginger was discovered buried in hot desert sand.
Desert conditions can naturally preserve bodies so it is uncertain whether the mummification was intentional or not. However, since Ginger was buried with some pottery vessels it is likely that the mummification was a result of preservation techniques of those burying him.
Stones might have been piled on top to prevent the corpse from being eaten by jackals and other scavengers and the pottery might have held food and drink which was later believed to sustain the deceased during the journey to the other world.