How Long do Animals Sleep? - We created this animation, to explore the sleep patterns of various animals and compare them to human sleep. From animals that snooze for most of the day to those that barely rest, discover the surprising differences in sleep duration across the animal kingdom. While we’ve included many animals in this comparison, you might notice that the water bear (tardigrade) is not featured. Although it can remain in a dormant state for up to 262,800 hours, this process is calle