§ 42.10.
(a) A person commits an offense if he intentionally or knowingly:

(1) causes a dog to fight with another dog;

(2) for a pecuniary benefit causes a dog to fight with another dog;

(3) participates in the earnings of or operates a facility used for dog
fighting;

(4) uses or permits another to use any real estate, building, room,
tent, arena, or other property for dog fighting;

(5) owns or trains a dog with the intent that the dog be used in an
exhibition of dog fighting; or

(6) attends as a spectator an exhibition of dog fighting.

(b) In this section, "dog fighting" means any situation in which one dog attacks or fights with another dog.

(c) A conviction under Subdivision (2), (3), or (4) of Subsection (a) may be had upon the uncorroborated testimony of a party to the offense.

(d) It is a defense to prosecution under Subdivision (1) or (2) of Subsection (a) that the actor caused a dog to fight with another dog to protect livestock, other property, or a person from the other dog, and for no other purpose.

(e) An offense under Subdivision (1) or (5) of Subsection (a) is a Class A misdemeanor. An offense under Subdivision (2), (3), or (4) of Subsection (a) is a state jail felony. An offense under Subdivision (6) of Subsection (a) is a Class C misdemeanor.