Which of the following characteristics is true for Norway rats?

Norway rats are characterized by a blunt nose and small eyes, making this description accurate. Their physical attributes reflect adaptations that are well-suited to their environment and lifestyle. The blunt nose is a distinctive feature that helps them in digging and burrowing, essential behaviors for finding shelter and food. Additionally, the small eyes of the Norway rat are typical for a creature that spends much time in darker, hidden areas, relying more on their other senses rather than vision.

In contrast, the other descriptions do not match the Norway rat’s characteristics. For instance, a pointed nose and large ears would suggest a different species, such as the roof rat, which is typically more adapted to trees and other elevated habitats. Small ears paired with a large body also does not describe Norway rats accurately, as their ears are relatively proportional to their body size. Lastly, medium-sized eyes and ears might apply to several rodent species but do not specifically define the Norway rat, which is known for its distinct blunt facial structure.