Texas Health and Safety Code - HEALTH & SAFETY § 822.041. Definitions

(A) makes an unprovoked attack on a person that causes bodily injury and occurs in a place other than an enclosure in which the dog was being kept and that was reasonably certain to prevent the dog from leaving the enclosure on its own; or

(B) commits unprovoked acts in a place other than an enclosure in which the dog was being kept and that was reasonably certain to prevent the dog from leaving the enclosure on its own and those acts cause a person to reasonably believe that the dog will attack and cause bodily injury to that person.

(A) locked;

(B) capable of preventing the entry of the general public, including children;

(C) capable of preventing the escape or release of a dog;

(D) clearly marked as containing a dangerous dog; and

(E) in conformance with the requirements for enclosures established by the local animal control authority.