I was driving my second daughter, 8, to school one morning, and the following conversation took place in the car:
MSD: When the animals at the SPCA don't get adopted and they have to kill them, how do they do it?
M: Oh, they have to give them a needle that puts them to sleep. They don't feel anything, it's just as if they've gone to sleep but they never wake up because they are in fact dead.
MSD: Oh good! I thought they stabbed them!