Rodents usually have a direct relationship with sickness and death. (See rat and mouse )
Gallery of dreams
What is a dream?
Dream is defined as a series of thoughts in the form of images that occurs in one's mind during sleep. It is a natural process that everybody undergoes in his life. Researches have found that people dream several times a night, each of the dreams lasting about 20 minutes. It is also found that a man spends 6 years of his life in dreaming.
Quality of Life
Most of us know that sleep can greatly affect the quality of life. There are just a lot of things that can easily affect our sleep. Thus, if you sleep better, you can live better. An 8-hour sleep is the recommended time for people to always have every day.