But, in fact, they are quite different. Housing a group of females with one male is a … They are they divided into four orders: 1) snakes and lizards, 2) turtles, 3) crocodiles and alligators, and 4) the tuatara (a creature found in New Zealand that looks like a lizard). Welcome to the Reptiles of Tennessee! Male turtles tend to have particularly long claws, and these appear to be used to stimulate the female while mating. The lungs of Testudines are multi-chambered and attached their entire length down the carapace.  Case studies exist of turtles playing. American snapping turtles and musk turtles have small, cross-shaped plastrons that give them more efficient leg movement for walking along the bottom of ponds and streams, and the Belawan turtle (Cirebon, West Java) has a sunken-back soft shell. These turtles swim using all four feet in a way similar to the dog paddle, with the feet on the left and right side of the body alternately providing thrust. This exposes her cloaca, and with it exposed, the male can attempt copulation by trying to insert his grasping tail. The largest of all hard-shelled turtles, loggerheads are named for their massive heads and strong jaws (leatherbacks are bigger but have soft shells). Depending on the species, the eggs will typically take 70–120 days to hatch.  Since these vertebrae are not fused and are rounded, the neck is more flexible, bending in the backwards and sideways directions. The word amphibian refers specifically to members of the class amphibia, but the word amphibious that comes from the same root means “operating or living on land and in water.” It is Reptiles include turtles, lizards, snakes, alligators and dinosaurs (which include the birds: all birds are dinosaurs). Scales are not limited to reptiles as fish and birds possess them too. Sea turtles are almost entirely aquatic and have flippers instead of feet. Scutes are made up of the fibrous protein keratin. The word chelonian is popular among veterinarians, scientists, and conservationists working with these animals as a catch-all name for any member of the superorder Chelonia, which includes all turtles living and extinct, as well as their immediate ancestors. Gopher tortoises live in well-defined colonies which are similar to those of highly social animals such as the prairie dog.  Two male saddle backs most often compete for access to cactus trees, which is their source of food. This dwarfs the better-known alligator snapping turtle, the largest chelonian in North America, which attains a shell length of up to 80 cm (2.6 ft) and weighs as much as 113.4 kg (250 lb). Turtles have rigid beaks and use their jaws to cut and chew food. , Most turtle species do not display social behavior outside of mating season but a few exceptions have been noted. Tortoise usually refers to any land-dwelling, non-swimming chelonian. Most species of tortoise should be fed dark, leafy greens with calcium and vitamin supplements.  In one of these states, Florida, just a single seafood company in Fort Lauderdale was reported in 2008 as buying about 5,000 pounds of softshell turtles a week.  The protection the shell provides the head when it is retracted is therefore not the main function of retraction, thus is an exaptation. Like all vertebrates, reptiles have bony skeletons that support their bodies. , Red-eared sliders are an example of a fully aquatic species in which the male performs a courtship behavior.  The date of separation of turtles and birds and crocodiles was estimated to be 255 million years ago. Everything Reptiles is the authoritative reptile magazine used by all reptile keepers and enthusiasts as a trusted source of information. Turtles and tortoises are both reptiles, they have near similar physical appearance, but turtles can live on land and in water. 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