Neuroethology is the study of animal behavior and its control by the nervous system. Neuroethology explores how the brain links stimuli (e.g. sights, sounds, or smells) to behavior. For example, many bats and Odontoceti have a special ability called echolocation. They use echolocation to find prey and to navigate. Researchers study their auditory system to show how sounds can be changed into a neural representation of sound. Neuroethologists are scientists who study neuroethology. They try to discover how the nervous system works. They often use animals with special behaviors in their research.