Chameleon (Chamaeleonidae) - the family of lizards. Has 2 subfamilies and 10 genera. The name "chameleon" comes from the name of a mythical being that changes its appearance.
The total length varies from 4 to 60 cm. The trunk is strongly compressed on its sides, with a short neck and usually a tight tail, covered with horny grains and hillocks, the spine is crust-like, sharp-edged. The length of the back and the front is a tall, wavy fold of skin, which is maintained by the carefully developed processes of the vertebrae. There are abdominal ribs but no collarbones.
On the head in many species, there are horn and skin gills (ridge, tubercles, sharpened horns). In males, horns and germs are much better developed than females. The head is shaft-shaped with a noticeably raised neck and more or less convex ridges. The chameleon's brains are like crocodiles and birds in their structure. Jaws are well developed, chameleons have different sized acrodont teeth.
Extremities are long, five-foot. The fingers are arranged by opposing groups of 2-3 in leather covers so that the foot and brush are converted into peculiar claws. Kegs are sharp. The tail is thick, tight, twisted with a spiral.
Chameleon's Vision. Eyes are large, rounded with thick, enlarged, circular eyelids, which are completely covered with scales, a small aperture for the pupil. Eye movements are independent of each other. One eye can look at 180 ° in a horizontal plane, and another - 90 ° in a vertical direction.
Drum membrane is absent.
The tongue is long, round, equal to the length of the head and trunk took together (sometimes longer). Its end has the form of a cylinder. The middle part is hollow-like in the stem, very elastic, strongly stretched. The tongue is capable of being thrown far to capture the prey.
The coloration can change quickly. This is due to the structure of the skin. It's outer fibrous coating, in which chromatophores are present - branched cells with dark brown, reddish or yellowish pigment seeds. In the case of a reduction of processes of chromatophores, the pigmentation of the seeds is accumulated in the center of the cells and the skin looks whitish or yellow. When a dark pigment accumulates in the fibrous skin of the skin, it becomes dark, almost black. Shades are formed by a combination of pigments. Green tones arise in the case of refraction of sun rays in the upper skin of the skin, where many crystals of guanine. As a result, the color can quickly change from white to orange through yellow and green to purple, dark brown and black. This can happen with the skin on the whole body, as well as in separate parts. Changing the color occurs under the influence of temperature, light, moisture, thirst, hunger, fright, irritation.
highly detailed model
lwo (subdivision): v=4499 p=4368
- hipoly v=11745f=19120
- lowpoly v=3646 f=4780