The document discusses tigers, including:
1) Population numbers for different tiger subspecies around the world, with a total population of 5,097 to 7,831 tigers.
2) Three subspecies that are now extinct.
3) Threats tigers face from poaching and traditional medicine use.
4) Details of Project Tiger, launched in India in 1972 to protect Bengal tigers, which has led to recovery of tiger habitats and populations in reserves.