I think I'd go for a cat :)
They do whatever the heck they want, whenever they want, if need be can get their own food, can survive on their own and get to engage themselves in the occasional cat-fight.
I'm also more of a night-person, so cool!
Plus .. when you're sweet and purr a lot, you get cuddled and petted
Cat-sex isn't all that great from what I can work out, but you can't win 'em all
Once I found a cat calling,'Miaou miaouu miaouuu'.
(It was,I like crystalFairy in cat's language)