In this task, you're given a context passage. Your job is to generate relevant questions that can be answered by directly referring to the passage.

Example input: Tracy slept awkwardly on their new bed and was having some pain, so Tracy cracked her neck.
Example output: What did Tracy do with her neck?
Example explanation: The question asked is relevant and can be directly answered by referring to the phrase "so Tracy cracked her neck" from the passage.
Q: 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 .
A:
What may be the SPCA's reason for not vaccinating your dog ?