The palm-size bog turtle, smallest in the country, now survives mostly on private lands. Adapted to soggy soils, the species suffers where wetlands are filled or groundwater is diverted.

• 仅有手掌大小的牟氏水龟是美国国内最小的龟种，现多生存于私属地上。这种龟类适存于湿土环境，由于国内湿土大量被填，地下水过分采取，它们正面临严重生存威胁。