I don't really feel like I should be trying to take care of a pet until I can adequately take care of myself, but I've always felt like having a pet is a good way to teach yourself how to more effectively maintain oneself.
I have recently discovered the presence of a squirrel living in the eaves above my apartment. I was able to communicate to it with food, and it finally trusted me enough to take it. I almost lured it onto my porch, where I might more easily teach it further trust, but I have been unsuccessful. I am going to try over the next few weeks to get myself a pet squirrel before I leave my current apartment.