Mice are clean animals - This is sometimes a surprise to people who have never owned pet mice. You will need to clean out their cage once a week, replacing all the bedding and adding new cardboard or paper shredding to chews and nest in.
Mice eat little and often - Mice are very easy pets to care for when it comes to feeding. They will eat anywhere between 10-15 small meals in a 24 hour period. They are nocturnal animals to ideally you need to put some food in their cage in the evening, then they will eat throughout the night and sleep most of the day.
Mice are social animals - If you have ever tried to catch a wild mouse you will know how difficult it can be, especially if you are trying to rid your house of them. But pet mice kept in captivity and interacted with from a young age can be very social. Once they are familiar with you they will usually approach you to take food from your hand. You can handle them and they will happily run up and down your arms.
Mice can breed quickly - It is very important when buying mice that you take time to make sure you only have either males, or females. Never have a mix of both or you will end up with a litter in no time, followed by another litter, and maybe another! Female mice can give birth to a litter of a dozen or so mice every 3 weeks, so you can appreciate how quickly your mice numbers can increase.
Mice have poor eyesight - They have very bad eyesight and can barley see past the end of their noses. Therefore they rely on their other senses and tools to know what is around them. Their sense of smell is used to help find food, be aware of danger and recognize familiar things. Their whiskers help them to judge the size of gaps and distances, along with what type of surface they are standing on and the terrain.