It's common knowledge that people purchase dogs for home protection purposes. But what about cats?
When I was living alone in DC, I had some problems with noise from the pipes in the walls. The building hired a plumber, and he was super creepy. He went into my private things while I was out and then told me about it when I got back.
When he finished with his work, he wouldn't leave! He just kept standing in my foyer, trying to make small talk. After about ten minutes, my cat Daria had had enough. She reared up and clawed him in both knee caps.
Understandably, he took that as his cue to exit.
It's one of the most awesome things I've ever seen, especially considering that she never once scratched me or any of my friends. Have you ever had a cat protect you?