I'm still reading, but as I go through the sight vs sound section I am reminded of how weird my cats seem to be (especially the male). He seems to have none of these risk assessment/survival instincts at all unless we are at the vet's office. At home, whether inside or on the balcony, he simply behaves like there is no danger from anything, ever. If he hears a new sound he will likely go toward it rather than away, and if a new person comes he's the first to the door to sniff them out. I don't think I've ever seen him hide in my life.

Then again, every cat owner thinks their cat is the special one.