What is the eye size of Norway rats?

Norway rats, also known as brown rats, typically have relatively small eyes in proportion to their body size. This characteristic is part of their overall physical profile, which includes a robust body and a fairly blunt muzzle. The small size of their eyes can be attributed to their burrowing lifestyle, as they tend to inhabit underground areas where vision is less critical compared to their other senses, such as smell and touch.

In contrast, other rodent species, such as certain tree-dwelling or open-area rodents, may have larger eyes to help them navigate their surroundings and spot predators. Therefore, understanding the typical eye size of Norway rats reinforces their ecological adaptations and behaviors, explaining why small eyes serve them well in their often dark and confined habitats.