The Mary River turtle is the most commonly known species of river turtle as they are the most popular freshwater turtles to keep as pets often in artificial aquariums or outside in ponds. The Mary River turtle is native to the Mary River found in Queensland, Australia and was once shipped to pet shops all over the world in the thousands as people liked them due to their small size.
Generally, most species of river turtle have an omnivorous diet that is primarily made up of aquatic plants, grasses and leaves. Many river turtle species also hunt fish and molluscs in the water along with small reptiles and amphibians.
Due to the relatively large size of the river turtle and the fact that it has a hard, protective shell, there are few animals that prey upon the river turtles themselves. Humans are the main predators of both the river turtle and it's eggs which are eaten as a royal delicacy in many of the river turtle's native regions. Other animals such as foxes. dogs, snakes, birds and even wild pigs eat the precious eggs of the river turtle that are buried in the sand.
As with other turtle and tortoise species, river turtles are fairly solitary animals but females can be seen gathering together in large groups on river banks to lay their eggs. River turtles can lay between 5 and 100 soft, leathery eggs depending on the species, which are buried in the sand by the female after she has laid them. After a couple of months, the baby river turtles hatch and make straight for the water. The average lifespan of the river turtle is about 30 years.
Due to excessive hunting and rising levels of pollution in the water, river turtles are extremely vulnerable animals many of which are today considered to be endangered or critically endangered. Programmes around the world have been seen up to try and protect the river turtles mainly from poachers who hunt them for their meat and eggs.