People that have owned both hamsters and guinea pig will probably have noticed that the hamsters tend to sleep a whole lot more during the day. Hamsters are, in fact, one of the better known nocturnal animals out there, so it should make the reason quite obvious. Hamsters are nocturnal, guinea pigs are diurnal, right?
With a closer look, though, guinea pig owners might notice that they don’t sleep a whole lot during the night, either. And that begs the question of when the guinea pigs sleep at all.
To which there’s no set answer, actually. Guinea pigs need little sleep, with four daily hours sufficing. They don’t sleep them in a row, either. Instead of that they distribute their sleep in small naps of around twenty minutes at different times of the day and night.
Still, even knowing this it might be difficult to catch a piggy sleeping, since they usually do so with their eyes open, especially if they are being actively observed, so it’s hard to distinguish in the first place. Effectively, guinea pigs have the skill of remaining alert while sleeping, and will do so unless they become very relaxed, which is not that often. Completely relaxed guinea pigs will rest their heads and spread out their legs. Guinea pigs will need more rest when they become older.
Guinea pigs are most comfortable and will have an easier time relaxing when laying on a cozy surface, like a soft cotton bed. Having a spacey cage where they can run a lot will also help in the sense that spending more energy makes them more tired providing a deeper, more relaxing sleep.
With that said, in nature guinea pigs are normally more active during the night, although that has more to do with convenience, since they prefer to wait until their potential predators to be asleep before they go foraging. They do still take naps at night, though.