Okla. Stat. tit. 4, § 4-499.3: Refund of deposit upon proof of spaying or neutering

The funds deposited with the releasing agency shall be refunded

to the adopting party upon the adopting party's presentation of a

written statement signed by a licensed veterinarian that the adopted

animal has been spayed or neutered. However, no refunds shall be

made unless said animal was spayed or neutered within sixty (60)

days of adoption in the case of adult animals; or, in the case of

infant animals, within thirty (30) days of the date a female animal

attained the age of six (6) months, or a male animal attained the

age of eight (8) months.