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In addition, snakes may deliberately choose ambush sites that facilitate infrared detection of prey. [16] [17] It was previously assumed that the organ evolved specifically for prey capture. [11] However, recent evidence suggests that the pit organ is also used for thermoregulation.
The snake detection theory, [1] [2] [3] also sometimes called the snake detection hypothesis, suggests that snakes have contributed to the evolution of primates' visual system. According to the theory, predatory pressure from snakes has selected individuals who are better able to recognize them, improving their survival chances and therefore ...
Clouded brille of a colubrid nearing moulting Clear brille of the same snake - 20 days earlier Exuvia of grass snake Natrix natrix , showing brille scales The brille (also called the ocular scale , eye cap or spectacle ) is the layer of transparent, immovable disc-shaped skin or scale covering the eyes of some animals for protection, especially ...
The Scolecophidia, commonly known as blind snakes or thread snakes, [2] are an infraorder [2] of snakes. [3] They range in length from 10 to 100 centimeters (4 to 40 inches). All are fossorial (adapted for burrowing). [ 4 ]
Illusion similar to Rotating Snakes. Rotating snakes is an optical illusion developed by Professor Akiyoshi Kitaoka in 2003. [1] A type of peripheral drift illusion, the "snakes" consist of several bands of color which resemble coiled serpents. Although the image is static, the snakes appear to be moving in circles.
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Generally, vision is best in tree-dwelling snakes and weakest in burrowing snakes. Some have binocular vision, where both eyes are capable of focusing on the same point, an example of this being the Asian vine snake. Most snakes focus by moving the lens back and forth in relation to the retina. Diurnal snakes have round pupils and many ...