Texas Agriculture Code - AGRIC § 167.141. Failure to Treat Animals

(a) A person who is the owner, part owner, or caretaker of animals commits an offense if, after the 12th day following the day on which notice of an order to treat is received, the person fails or refuses to treat the animals as prescribed in the order, on any date prescribed in the order, during the hours prescribed in the order, under the supervision of an inspector, with an official treatment chemical, or in the treatment facility designated in the order.

(b) An offense under this section is a Class C misdemeanor unless it is shown on the trial of the offense that the defendant has been previously convicted under this section, in which event the offense is a Class B misdemeanor.