Gaia
Eat and be eaten: the eternal cycle of life. The elephant - the largest and heaviest land mammal in the world - has hardly any natural enemies. The only predator that is known to kill elephants at times is the mighty and powerful lion. These big cats also hardly need to fear other animals. Yet, there's a threat to both predator and prey. The number of African lions has dropped by up to 75% in recent decades. Not because of natural enemies, but because of us, humans.