Acheta domesticus, commonly known as the house cricket, is a species of cricket found worldwide. They are typically brown or black and can grow to about 2 to 3 centimeters in length. House crickets are known for their distinctive chirping sound, which is produced by males to attract females. These crickets are often used as a food source for pets, such as reptiles and birds, and are also gaining popularity as a sustainable protein source for humans. They thrive in warm environments and prefer to live in dark, moist areas, making them common in homes and gardens.