Cricetulus griseus, commonly known as the Chinese hamster, is a small rodent native to the grasslands of northern China and Mongolia. It typically measures about 10 to 12 centimeters in length and has a soft, grayish-brown fur. This species is known for its large eyes and short tail, making it easily recognizable. Chinese hamsters are often kept as pets and are also widely used in scientific research due to their docile nature and ease of care. They are nocturnal creatures, primarily active at night, and enjoy burrowing and exploring their environment.