Blanding's turtle (Emys blandingii or Emydoidea blandingii) is a semi-aquatic turtle of the family Emydidae. This species is native to central and eastern parts of Canada and the United States. It is considered to be an endangered species throughout much of its range. Blanding's turtle is of interest in longevity research, as it shows little to no common signs of aging and is physically active and capable of reproduction into eight or nine decades of life.