Which species are most commonly associated with leptospirosis?

The correct choice reflects the fact that wild mammals are indeed the species most commonly associated with leptospirosis. This bacterial disease is primarily caused by the Leptospira bacteria, which are often found in the urine of infected animals. Wild mammals, such as rodents, raccoons, and deer, serve as significant reservoirs for these bacteria, contributing to transmission within the environment.

Leptospirosis is less commonly associated with birds, domestic cats, or reptiles. While domestic animals, particularly dogs, can contract the disease, wild mammals play a more prominent role in the epidemiology of leptospirosis due to their natural behaviors and habitats, which allow the bacteria to spread more easily in wild environments. Understanding the primary reservoirs of leptospirosis helps in effectively managing and preventing outbreaks in both wildlife and domestic populations.