What is a physical characteristic of the house mouse?

The physical characteristic of the house mouse that is most accurately identified is small eyes. House mice have relatively small eyes compared to their body size, which is a distinctive feature that helps differentiate them from other rodent species. Their small eyes are suited to their nocturnal lifestyle, allowing them to navigate in low-light conditions more effectively.

House mice are typically small, measuring about 2.5 to 4 inches in body length, excluding their tails. This small size is in contrast to the large size described in one of the other options. Additionally, house mice have proportionately large ears relative to their body size, which aids in their auditory sensitivity, further distinguishing them from other rodents with different ear sizes. Thick fur is also not characteristic, as house mice generally have a smooth coat that is not notably thick.