Final answer:
Pets are generally not permitted in business facilities, but there are exceptions for service animals that are specifically trained to assist individuals with disabilities.
Step-by-step explanation:
According to the U.S. Department of Transportation (DOT), pets are generally not permitted in business facilities, such as airports and airplanes.
However, there are exceptions for service animals. Service animals are specifically trained to assist individuals with disabilities and are allowed to accompany their handlers in business facilities. These animals provide necessary tasks and services to their owners, such as aiding individuals with mobility or psychiatric disabilities.