Texas Human Resources Code - HUM RES § 121.005. Responsibilities of Persons with Disabilities

(a) A person with a disability who uses an assistance animal for assistance in travel is liable for any damages done to the premises or facilities by the animal.

(b) A person with a disability who uses an assistance animal for assistance in travel or auditory awareness shall keep the animal properly harnessed or leashed, and a person who is injured by the animal because of the failure of a person with a disability to properly harness or leash the animal is entitled to maintain a cause of action for damages in a court of competent jurisdiction under the same law applicable to other causes brought for the redress of injuries caused by animals.