Texas Penal Code – Section 42.10. Dog Fighting
§ 42.10. DOG FIGHTING.
(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.