Abstract
The alien species Raccoon was first discovered in the Tsugaru region in 2004, and since then its individuals has become increased and its distribution has expanded. A survey of 14 municipalities in the Tsugaru region revealed that raccoons were found in 112 locations in 11 municipalities, indicating that they are distributed throughout the Tsugaru region. Particularly large numbers were found at the foot of Mt. Iwaki. Among crops, watermelon, corn, and grapes were most fre-quently damaged. Each municipality has a control plan to capture raccoons, and 150 to 180 rac-coons are captured annually. Hirosaki City had the largest number, accounting for nearly half of the total number of raccoons captured. Although most captures were conducted during the crop harvesting season, it was considered necessary to capture all raccoons simultaneously over a wide area in spring, during the calving season, in order to eradicate raccoons.