Chang Ming Chuang, 66, was tracking the animal at a wildlife resort on Lake Naivasha, 90km (56 miles) north-west of the capital, Nairobi. A second Chinese tourist was injured in the attack. Six people have been killed by hippos in the area this year. High water levels have seen hippos - the world's deadliest large land mammal - stray on to resorts for pasture. Witnesses said the two tourists had come too close to the animal near the Sopa hotel.