Cats.
Cats are much more independent, require no training, are just as social if raised properly, don't make a ruckus, and are all-in-all apathetic for the most part, just like me.
I have a gaggle of cats but also own 2 dogs (who I love a lot, they live at my mother's house though). Dogs are a lot of work and are often annoying, I've never really found my cats to be annoying (even the one who tries to sing all the time). It's great to go on a vacation and just pour out a mound of food and know that the cats will be fine.
One of my cats follows me around the house and when I stop walking he falls on his back and waves his arms around, it's adorable!