I once had a very vivid dream that i lived in a society that valued animal life, but still ate meat, and figured that the best compromise was to breed bigger cows, so that fewer number of animals needed to be killed for more meat. So a genetically engineered ultracow was bred that was the size of a battleship, and it took a whole city to care for and feed it. But something went wrong and the ultracow got out of its pen and just roamed around breaking stuff and nobody could catch it again.