I used to have a pet rat, she loved to sit on my shoulder when I worked on the computer and would sleep in the pocket of my hoodies when I walked around
I learned to hate rats because of my roommate's rat... He wasn't fixed and would drag his nuts over everything, marking his territory. She'd go to work and just let him roam around the house (and not in a ball either, oh no. He was terrified of his ball). I had to leave my door open because we didn't have any A/C and I needed SOMETHING of a breeze to keep my room from getting into the 90s. Goodness only knows what he did in there. He squirted all over my clothes and my phone, chewed on my ps3 controller, would climb up your leg while you were cooking and didn't know he was about. My other roommate and I ended up paranoid about his whereabouts. He's lucky he didn't get tossed out the storming window. Nasty little thing...
Also I have been wanting a rattie for the longest time;;