National Geographic : 2011 May
Number of animals killed for food Worldwide, 2009 52 billion chickens 2.6 billion ducks 1.3 billion pigs 1.1 billion rabbits 633 million turkeys 293 million cows 24 million water buffalo 1.7 million camels 518 million sheep 398 million goats POPULATION Food for Thought There will soon be seven billion humans on Earth, but how does that number compare to other species on the planet? We are certainly outnumbered by ants. Harvard biologist and ant expert Edward O. Wilson has estimated that there are a thousand trillion to ten thousand trillion ants at any one time.* That would be about a million ants for every one of us. And doesn't it seem like that when they invade our kitchens? Estimating animal populations, especially wild ones, is hard, but here's a look at one category of animals we can count: the ones we eat. ---Nigel Holmes 7 SEVEN BILLION ART: NIGEL HOLMES. SOURCE: FAO *And they're edible. Ants are a good source of protein and are considered a delicacy in many parts of the world.