Nile crocodile zebras and blue wildebeests ("Connochaetes taurinus"), picking off hundreds of these large ungulates annually. All domesticated ungulates and pet animals will on occasion be hunted by Nile crocodiles, up to the size of dromedary camels ("Camelus dromedarius") and cattle ("Bos taurus") In Tanzania, up to 54 head of cattle may be lost to crocodiles annually, increasing the human-crocodile conflict level. Goats ("Capra aegagrus hircus"), donkeys ("Equus africanus asinus") and dogs ("Canis lupus familiaris") may also rank amongst the most regularly recorded domesticated animals to be taken by Nile crocodiles. Particularly large adults, on occasion, take on even larger prey, such
African wild ass female collected by von Heuglin near Atbarah River, Sudan, and present in the State Museum of Natural History Stuttgart, MNS 32026. The two subspecies recognized are the Nubian wild ass "Equus africanus africanus" (von Heuglin & Fitzinger, 1866), and the Somali wild ass "Equus africanus somaliensis" (Noack, 1884). African wild asses are well suited to life in a desert or semidesert environment. They have tough digestive systems, which can break down desert vegetation and extract moisture from food efficiently. They can also go without water for a fairly long time. Their large ears give them an excellent sense of hearing