It's the Red River giant softshell turtle, or Yangtze giant softshell turtle.
When I first read about the rarity of this species I couldn't put my mind to accept that there are only four, yes, one two three FOUR of them left in the entire world. With only four individuals, the genetic pool is generally unrecoverable. Without enough individual to provide genetic variation, all the offspring of these individuals could succumb to a common disease.
This species holds the record of being the largest freshwater turtle in the world. It can weigh up to 300 pounds, with a shell that is up to 40 inches long. Once commonly found in lakes and rivers all across China and Vietnam, the giant turtle is now on the brink of extinction.
Currently there are two individuals living in Suzhou zoo in China, one of which is a 105-year-old male. The other two lives in Vietnam, one at Hoan Kiem Lake and another at Dong Mo Lake Son Tay.