The spread of big-headed ants in east Africa has disrupted the life of the African lion, forcing it to make fewer zebra kills and switch its prey, scientists have found. The presence of the insects at the Ol Pejeta Conservancy in Kenya has changed the landscape of the area, impacting plants and animals throughout the ecosystem. According to the study, big-headed ants - thought to be native to Mauritius but which have spread throughout much of the subtropical and tropical world - have "led to increased herbivory by elephants and ultimately a shift in lion prey species from zebra to buffa...