Bones tend to be associated with death and the distant past. They predict problems, loss of excitement, and generally, indicate that we are going through a period of pessimism and dejection. If you dream of a broken bone, the foundations of your real life and personal power could be teetering. Goddesses that wear a necklace of bones around their necks or on their hip refer to the pressure of the passing and swiftness of time.
One of the reasons why people always get involved in road accidents is that, they are tired while driving, or that they lack sleep. Many people do not realize that their performance can be highly affected by having not enough sleep. Sleep deprivation can affect reaction as well as decision making, not to mention that it could make a person unable to drive well. It goes the same with drunk driving.
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.