It symbolizes prosperity and abundance. It is interpreted as the triumph for having achieved a goal that required a long struggle. Hunting a bison represents acquiring at the same time food, shelter, and social recognition.
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.
If you want to be more creative today, that you were yesterday, it would be ideal for you to have enough rest and sleep. Your brain will be working overnight to consolidate your memories, making them stronger and making you organized and well-structured. Researches showed that people will have stronger emotional components, which could surely help with their creativity.