It can adjust itself to various surroundings. It makes a living during nighttime. During daytime, it resides in soil hollow. When facing enemy, it intimidates by trampling its feet. Its bristle points up and it shakes its tail to make sound. Porcupine is not able to toss its bristle away but its bristle is quite easy fall. Once enemy is hit by its bristle, its bristle, thus, stab on its enemy.