In fact, animals also exhibit behaviors resembling insomnia. One major study says that male mice experience something like stress-induced insomnia when moved from their own cages to other mice’s cages.
Flies can also suffer from insomnia. It then becomes more difficult for them to fall asleep and stay asleep, and they spend more time on it overall.
Despite all this, the authors of a scientific review of animals’ sleep disorders stressed that it is still unclear whether these animals are trying to sleep. And insomnia also has a subjective component, so the easiest way to find out is to ask a person how they sleep.
Source: Ferra
