Animal Behavior What animal sleeps 90% of its life? March 9, 2026 by Myaya | Leave a Comment No single animal sleeps for 90% of its life. While some animals, like sloths and koalas, are known for their extensive sleep habits, no species reaches such an extreme percentage. Their long sleep durations are adaptations to their low-energy diets and slow metabolisms. The Truth About Animals That Sleep a Lot It’s a common misconception […] Read more ยป