Black-breasted leaf turtle
Black-breasted leaf turtle
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Black-breasted leaf turtle

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Black-breasted leaf turtle

The black-breasted leaf turtle (Geoemyda spengleri), also commonly called the Vietnamese leaf turtle or the black-breasted hill turtle, a species of turtle (Order Testudines). The species is listed as one of the smallest turtle species in the world. The species is endemic to Southeast Asia and is listed as endangered as of July 16, 2018.

The black-breasted leaf turtle is a species of turtle in the family Geoemydidae (formerly called Bataguridae).   

The specific name, spengleri, is in honor of Danish naturalist Lorenz Spengler.

They are one of the smallest turtle species weighing from 90 to 150 grams and can be recognized for its black markings among the plastron while its carapace resembles a leaf. Much is not known about the behavior of G. spengleri but it is said they are solitary and terrestrial animals. They also have the ability to move their eyes independently to observe their surroundings. These turtles have an estimated lifespan of 20–24 years.

G. spengleri is found in the montane forests of China, Vietnam and Laos. They can be found in the Ryukyu Islands of Japan through China to the Quang Nam Province of Vietnam. They are also found in non-native regions as a result of trade or release. G. spengleri occurrences have been recorded at high and mid elevations of 1000 meters and 500 meters but there is no set geographical distribution as result of limited surveying.

G. spengleri inhabits unfragmented forests and woodlands near shallow freshwater streams. It's suitable habitats consist of subtropical, tropical moist montane and wetland forests. Adult G. spengleri reside under canopies or shade in suitable temperatures as low as 40 °F to 90 °F. They need sufficient habitat to nest in open areas.

While the feeding behaviors have not been observed in the wild, it is found that G. spengleri turtles are omnivores and have indicated a feeding diet of snails, leaves, fruits and insects through fecal substance. They may also feed on crustaceans. In captivity, this species may feed on small invertebrates and meats but prefer live prey such as earthworms, crickets, slugs and pill bugs.

Sexual dimorphism plastral kinesis is present in mature G. spengleri where females have a flexible connection between carapace and hypoplastron whereas males have a bony structure. Reproduction in the wild has not been recorded but in captivity, females tend to lay one or two eggs per clutch.

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