Because of their aggressiveness and destructive power, crocodiles meant, according to the inhabitants of ancient Egypt, anger and evil. This idea has survived to this day. Dreaming of a crocodile, then, represents the dark and aggressive inclinations of your unconscious: betrayal, jealousy, resentment, etc. It predicts a strong disappointment of your best friends.
Gallery of dreams
Do animals dream?
Research conducted by various scientists show that animals do experience dream while sleeping. They also experience similar sleep stages like human beings - REM and Non-REM. If you have noticed a dog sleep, it might sometimes wag its tail, this indicates some response to its dream. A study was conducted in a cat by removing a part of the brain stem, which will not prevent it from reacting to the dream during REM. It was noted in some cats they were aggressively chasing mice as in reality.
Keep stress at bay
Your cardiovascular health will likely to suffer when you deprive yourself to sleep. Sleeping can surely reduce the levels of stress you're going through and with that, you could have a much better control of your blood pressure. Not having enough of sleep will also affect the levels of your cholesterol, which plays a significant role in heart disease.