Given the task definition and input, reply with output. Craft one correct answer to the question given in input. To make it more interesting, try to use non-stereotypical language if possible. Make sure your correct answer is reasonably long, consistent with the context, and requires common sense (instead of explicit extraction from the context.) In your answer, use as few words as possible from the given context. Use a response that is uncommon/non-stereotypical, so that it is less predictable. To be less repetitive, please vary your language for each question.

Context: I called the SPCA to make an appointment for my 16 week old puppy 's third set of shots . They informed me that they will not give vaccinations unless the dog is spayed , and gave me an appointment to have her fixed . August 14th . At this time , she 'll be 18 weeks .
Question: What may be the SPCA 's reason for not vaccinating your dog ?
Its genitals needed to be removed first .