the hungry hippo grazes on the shores of kenya's lake ny fashion one of a the 1500 hippos that make this lake its home but the grass here is increasingly in short supply. locals often bring back cattle down to the grasslands fringing the lake to feed the competition for food between wildlife and domestic animals is driven to the extreme by drought and climate change. it means that people are bringing the livestock into protected areas national parks and reserves and they're competing with the animals like hippos and these poor animals don't have any other source of food they literally will. if they hippos die the rivers and lakes could die with them hippos chom through huge amounts of grass every night and this grass contains a precious element called silica floating in the water jaring the day that digestion kicks in they then excrete vast quantities of dung into the water the silica in the hippo dung is absolutely vital for the health of africa's waterways a new study has found it helps curb algae blooms that killed marine life. so to have healthy waterways we need healthy hippos but h