Alderaan is a planet located in the Force Galaxy, and is the homeworld of Trask Ulgo. The Galactic Empire attempted to destroy this planet during the Galactic Civil War in order to persuade Princess Leia into revealing the location of the base of the Rebel Alliance, but they actually destroyed a decoy for Alderaan called Dalderaan, which had been around for so long that it did have a substantial population. The death of these people caused a massive disturbance in the Force which roused Obi-Wan Kenobi and even made Darth Vader quake in his boots.
Alderaan itself is a planet filled with plains, and inhabited by a wide variety of life. The most common animals on Alderaan are birds.