Tigers have a very well developed sense of sight, hearing, and touch. They rely on these three senses the most when they are hunting. Their eyesight, which is a part of their CNS, is very good at night due to an abundance of rods in their eyes, which are responsible for visual acuity for shapes, or in other words help see shapes. Tigers, however, lack an abundance of cones in their eyes, which are responsible for seeing color. The reason they have more rods as opposed to cones is that rods are more useful at night, so they can see the shapes of their prey, and color is not useful at night. Another feature that helps the tiger see at night is called the tapetum lucidium, which is a mirror-like structure located behind the retina.
Hearing is vital to a Tiger's survival in the wild, and it is the most acute of all a tiger's senses. Tigers are able to hear sounds up to 60 kHz as opposed to humans who can only hear up to 20 kHz. Furthermore, tiger's ears can rotate, which gives them the capability of locating the origin of sounds easily.
Tigers also rely on their whiskers to give them information about their environment. Tigers have 5 different kinds of whiskers, which are differentiated by their location on their body. Whiskers are thicker than normal hairs on the tiger's body and are also more deeply rooted in the skin and are surrounded by a small capsule of blood, which is displaced by the root of the whisker when the Tiger touches something. Sensory nerves detect this and send messages to the brain, which interprets the message and then offers a response. The five types of whiskers on a tigers body are mystacial whiskers (located on the snout); superciliary whiskers (located above the eyes); carpal whiskers (located at the back of a tiger's front legs); check