New experiments suggest that rats might (the only definitive answer would be for one to tell us!) dream. By monitoring the brain activity of rats under three scenarios: 1) food visible, but not reachable. 2) Asleep after viewing food that was not reachable and 3) when the rats finally walked to the food. The regions of the brain associated with walking and navigation were active in all three scenarios. This suggests that much like during our sleep, when the hippocampus is processing thoughts/observations for memory, the rats may also be dreaming of a tasty treat.