You are in a desert. A lion, a cow, a horse, a sheep, and a monkey To escape the desert you are going to have to get rid of one of your animals. You have 4 animals left. It goes on for miles.
Sand is everywhere.
You realize, to get out, you are going to have drop another animal. Walk, walk, walk. Hot, hot, hot. You have no choice but to drop another animal. You have 2 animals left.