An animal control agency or an employee of an animal control agency acting within the scope of the person's employment that in good faith takes into custody and cares for a nonlivestock animal that is abandoned, running at large, or stray is not liable for civil damages for an injury to the animal arising from an act or omission in caring for the animal, except in a case of gross negligence, if the animal control agency obtains custody of the animal from a person not affiliated with the animal control agency and that person certifies in writing that the person has taken reasonable steps to locate the owner as provided by Section 92.002.
Tex. Civ. Prac. and Rem. Code § 92.003