* * * * * When tuna goes bad “Hey, what happened to the tuna?” I asked. There was a small Tupperware container of tuna in the refrigerator. “I gave it to the cat,” Spring [1] said. “It was old and kinda off. You can't eat that, but the cat can.” “Oh?” “Yea, dogs and cats have great immune systems—it comes from licking your butt.” “Ah.” [1] http://www.springdew.com/ Email author at sean@conman.org .