Rats have all basic sensory organs and are very receptive animals. But their sensory organs differ in the way they work. Their vision is limited, and limited to lesser colours than humans. However, the other senses are much more developed than human beings. The sense of touch is highly developed with whiskers acting as receptive antennas. Their brain can actually picture the surrounding via the whiskers. The sense of smell is the most developed, and we as humans can only imagine the smells the rats can perceive. Each smell is a piece of information for rats.
How different do rats perceive colours
Rats are not colour blind, as is the general perception. Humans see three different colours; blue, green and red, while rats can see only blue and green. So a lotus flower which we see as pink will look to be blue to a rat. Also, some spectrum area between green and blue is not perceivable to the rats. The neutral spectrum is seen as white by the rats. Rats can also see some ultraviolet spectrum which is invisible to humans. A rat’s world as it sees is quite different from us humans. A Bachelor in Biology is a good options for those interested in learning more.
The hearing and taste
Rats most sensitive sense of all, is their sense of hearing. They can hear softer sounds than people, but also higher frequency sounds. They can even hear the light bulb’s humming which is outside human’s purview. Another sense is taste. Rats have the habit of nibbling at everything that seems to be food. They have very sharp teeth and can gnaw through tough surfaces. The environment seems quite different to a rat than a human. A human beings’ drawing room setting, for instance, is seen by the rat as a hiding space. The sofa is seen as a place to hide under.