I could have done without Limpet prowling the neighbourhood at dead of night and bouncing through my window at 3 am with someone's thirty-dollar-steak-for-tomorrow's-barbecue which they'd trustingly left defrosting in their undefended kitchen. Nobody ever traced the disappearances to her as far as I know (nobody ever accosted me in the street) and there was no way to keep her inside without wrecking us all psychologically. But the embarrassment of having a delinquent cat almost crushed me.

Failing that, I could have done without her
a) making the come-watch-me-murder-this noise for half an hour
b) gumming the edges of the still-frozen thing for 30 minutes, with sound effects.
c) losing interest and leaving it for me to step on in my bare feet when I got up (I'm never at my best in the mornings) six hours' worth of defrosting time later.

I got so good at her midnight-hunter behaviour I could wake from a dead sleep, assess the exact tone of the noise, and diagnose instantly whether she'd come home with a dead steak, a wounded bird, someone's discarded chicken carcass, or an undamaged mouse. In the case of the dead steaks that backfired on me (and my feet). For a bird, it sounds awful but I'd just shut her in the bathroom with it and hose down the walls when I got up. KFC leftovers were the worst-case scenario but at least the damned things were easy to get away from her and didn't try to escape. For the intact mouse I would have to get up, find cat, find mouse, tour house with mouse dangling by tail from other hand like a swat team closing all escape routes, drop mouse out 1-inch slit in last window, slam last window shut and endure cat beating on the glass for half an hour before she forgot about it. I'm not at my best in the middle of the night either.

On the plus side, she did used to eat all the giant abnormal Woody-Allen-sized spiders that come out of drainpipes in the winter around here.