NACA Animal Control Officers Practice Test

Which physical sign is a common indicator of disgust?

1. Upper lip raised

2. Lip corners tightened

3. Eyes glaring

4. Lower eyelids tensed

The correct answer is: Upper lip raised

A raised upper lip is a widely recognized physical sign of disgust. This facial expression often manifests as a reflex response to unpleasant stimuli, such as bad smells or offensive tastes. The action of raising the upper lip can also serve to create a gap between the upper teeth and gums, instinctively protecting the individual from potential harm. It is a survival mechanism that signals the body to avoid harmful substances. In contrast, the other options represent different emotions or reactions. For example, tightened lip corners are often associated with fear or tension, glaring eyes typically indicate anger or aggression, and tensed lower eyelids can reflect surprise or concern. These distinctions highlight the importance of recognizing specific facial expressions and their meanings in understanding human emotions, particularly in the context of animal behavior and responses to perceived threats.