Hard to kill? A childhood friend of mine had one as a pet, and it had escaped the night before I went over to his house for the first time. When I got there, I went to the bathroom and that fuck was staring at me right in between my feet while I was taking a shit. Needless to say, I was scared beyond belief so I stomped that mother fucker out. Died after like two kicks.
Of course it was after I had already murdered it that I found out how expensive that little shit was... suffice to say I wasn't his friend anymore after that.