Animal Crossing allows you to interact with a virtual village of animals that are doing something different every minute of every day. With Animal Crossing's 24-hour clock, the game's unique events can be in synch with real time--as day turns to night in the real world, the sun will also begin to set in the game. The dynamic setup requires you to come back every day and carry out your daily routines, build relationships with villagers, celebrate special days, collect furnishings for your homes, and just live life in the unique world of Animal Crossing.
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This guide has many different alternative fish sheets to choose from.

This guide has many different alternative insect sheets to choose from.

During the year, your town holds a variety of events and festivals that you and your villager can participate in. Some of these events correspond to real world holidays, others are localized to the Animal Crossing World. Attendance at these events is not only fun, but can usually net you goodies from Tortimer the Mayor. Thus, you should always make an effort to show up when your town is holding an event.
(Description Source: http://www.animalxing.com)