Disbelief
The vet was taken aback by his responses. How could he have done this? Being a grownup is very difficult. The vet bolted from his office and went straight to his assistant for assistance. He needed assistance with this because he had not anticipated Peter’s responses.
Doing Medical Tests
He immediately began several medical testing. He needed the test results to validate his assumptions as soon as possible. The only thing the vet could think of was how an adult could do this to the kitties he cared about. He had to be professional, though.