I know it's not a rat but it is still and adorable little rodent! "Dormice are an endangered species and mainly found in the southern counties of Britain. They can spend up to three quarters of their life asleep!
How power-napping helps late-born dormice. In the race against time to build enough energy reserves to survive hibernation, dormice born late are at a serious disadvantage. Research has found that, despite having less time to gather.
False memories implanted in sleeping mice. They will reprogram us while we sleep. By directly manipulating the brains of sleeping mice, researchers tricked the animals into thinking they had received a reward at a specific place.