How does a tiger sense its prey at night ?
Answers
Explanation:
Tigers have a well-developed sense of touch that they use to navigate in darkness, detect danger and attack prey. ... The tiger uses these whiskers to sense where they should inflict a bite. When navigating through darkness the tiger's pupils dilate to let more light enter the eye to increase their vision.
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Answer:


Senses
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Eyesight
Tigers have forward facing eyes rather than one on each side of their head. This provides binocular vision because each eye's field of vision overlaps creating a three dimensional image. Binocular vision enables them to accurately assess distances and depth which is extremely useful for maneuvering within their complex environment and stalking prey.
Tigers have more rods (responsible for visual acuity for shapes) in their eyes than cones (responsible for color vision) to assist with their night vision. The increased number of rods allows them to detect movement of prey in darkness where color vision would not be useful.
Tigers have a structure at the back of the eye behind the retina called the tapetum lucidum that enables them to have better night vision. This mirrorlike structure reflects light (that has not already been absorbed by the eye) back into the eye a second time to help produce a brighter image. The tapetum lucidum causes their eyes to glow at night when a light is shone on them.
Cats in general have a broad horizontal line of nerve cells near the central portion of their eye that enables them to have better peripheral vision. This characteristic is especially useful for hunting prey that is running across a plain.
Tiger eyes have large lenses and pupils that increase the amount of light let into the eye. This characteristic helps the tiger with night vision and when there are low light levels available.
Research suggests that cats in general are capable of seeing the colors green, blue and possibly red, just in less saturation or strength than we see them.
In addition to the upper and lower eyelids that protect the eye, cats and other animals such as crocodilians (alligators, crocodiles, etc.) have a nictitating membrane on each eye that helps keep it moist and removes dust from the surface.
In general cats require only about 1/6 the light humans do to see.
Touch
Tigers have a well-developed sense of touch that they use to navigate in darkness, detect danger and attack prey.
Tigers have five different types of whiskers that detect sensory information and are differentiated by their location on the body. Whiskers differ from guard hairs in that they are thicker, more deeply rooted in the skin and surrounded by a small capsule of blood. The root of the whisker displaces the blood when the whisker comes into contact with something thereby amplifying the movement. Sensory nerves detect this movement and send signals to the brain for interpretation.
The mystacial whiskers are located on the tiger's muzzle (snout) and are used when attacking prey and navigating in the dark. The tiger uses these whiskers to sense where they should inflict a bite. When navigating through darkness the tiger's pupils dilate to let more light enter the eye to increase their vision. The dilated pupils of their eyes assist their night vision but makes focusing on objects up-close difficult. The tiger's mystacial whiskers help it feel its way through the dark.