(a) Except as provided by this section, a new owner who signs an agreement under § 828.002 shall have the adopted animal sterilized on or before the sterilization completion date stated in the agreement.
(b) If the sterilization completion date falls on a Saturday, Sunday, or legal holiday, the deadline is extended to the first day that is not a Saturday, Sunday, or legal holiday.

(c) A releasing agency may extend the deadline for 30 days on presentation of a written report from a licensed veterinarian stating that the life or health of the adopted animal may be jeopardized by sterilization. There is no limit on the number of extensions that may be granted under this subsection.