Day #14 of the A-Z Challenge
Hamsters are nocturnal because they originally lived in the hot areas of Central Asia, and lived in burrows in the daytime and went out at night to avoid the heat of the day.
Also, there are many daytime predators, so by only coming out at night, they are keeping themselves safe.
This means that it is only fair to let them sleep during the day, so don't be tempted to wake your hamster up at midday for a play; try and wait until at least 4 o'clock.
This will allow your hamster a sensible amount of sleep, and will prevent him or her from being grumpy or nipping you.
Also, bear this in mind when you clean your hamster out. Remember - try not to wake your hamster before 4 o'clock.