Mummies of humans and other animals have been found on every continent, but as a result of natural preservation through unusual conditions, and as cultural artifacts. Over one million animal mummies have been found in Egypt, many of which are cats. They used a hook to remove the brain from taking it out from the nose and they would surgically remove all other organs but the heart, as this was needed for the weighing of the heart ceremony. The organs would then be buried with the mummy in separate containers called canopic jars. 