 Three exceptions are the semi-aquatic Eurasian otter, water deer and Père David's deer.In addition to the very large and exceptionally rare Yangtze giant softshell turtle, several smaller turtle species are found in the Yangtze basin, its delta and valleys.These include the Chinese box turtle, yellow-headed box turtle, Pan's box turtle, Yunnan box turtle, yellow pond turtle, Chinese pond turtle, Chinese stripe-necked turtle and Chinese softshell turtle, which all are considered threatened.