So you plead to being an idiot, and what does “sleek wildcats” have to with shooting pet cats?
You really want to admit that you can’t identify that a cat is feral or not?
You really want to pretend that veterinarians and animal control people can’t either?
The woman who shot the cat is a veterinarian. She could not tell that it was not feral (if indeed it was not). The cat did not have a collar. Feral cats should be destroyed—they present harm to local fauna and risk of disease. If you don’t understand that, you are part of the problem.