FWIIW, my tabby is 23 years old.
And still rules the house (her sister died a few years ago).
The vet said her last blood work looked like it was for a kitten :)
May she be around for many more years.
Of my two black and white cats, the younger one is definitely nuts, but not violently so. He does have a weird fetish for attacking my feet, but only if I'm wearing socks. (Must be socks on feet; bare feet and/or loose socks he couldn't care less about.) Also, when I came home a few days ago reeking of Clorox (long, boring story) he started attacking me, but even then he soft-mouthed me. [I've heard that Clorox fumes make cats violent; now I believe it.]