Home Alone II

So I've been house sitting and am halfway through. This is the first time I've been alone since I left Cyprus. Crazy, huh?
Well, not ENTIRELY alone...

--My little demon kitty is very affectionate and has been alternately snuggly and trying to bleed me out (my lower legs have been scratched to hell, because she likes to climb up and sit on my lap when I eat). In fact, this very second she's sleeping on my chest with her head tucked up in my neck. I'm trying to teach her to come when I call her name, like Rizzo does, and so far she's managed okay, but I'm not sure if she's coming because I call her, or because she GENERALLY follows me around unless she gets distracted.
--Amanda's dog has been kind of sulky. He took off once (yeah, that was a mistake on his part) and since then has been even following me into the shower, sleeping on my stomach, under my feet when I'm on the couch (hiding from my kitten, because she terrorizes him).
--Amanda's cat is not my favorite at the moment, but we'll not go into that.
--My baby seems to have adjusted to the kitten's presence, but has figured out that when I come home from work, I am too exhausted by the dogs and the kitten for immediate attention, so he chills outside until I have about an hour to deal with everything else.
--Mom's dog comes out for meals and once in a while to go outside, but otherwise skulks under the bed.
--The hamsters, unfortunately, are the ones suffering most from my exhaustion. I haven't held Oscar all week, and Amanda's hamster has been fed, but that's the extent of our interaction.

I feel awful about it, but I'm a very introverted person. Usually that doesn't extend to animals, but after working all day, I just can't seem to deal with three very demanding animals and then a bunch of passive ones without overlooking someone. I guess I'm just spread too thin.

I have to admit, it's a little weird for me. I can't figure out what's wrong. I've always loved animals, and I've worked with groups of kids and animals before, and not had such a limited patience. I don't understand why I can practically run a horse barn with 25 horses, and direct a camp with 50 kids, but I can't seem to come home from work and handle a handful of dogs and cats.