animal black bull country cow farm grass rural tree white bleached wood Bull Island dead tree driftwood tree trunk Adaptation antelope buck deer kudu mammal nature reserve Nyala terrestrial animal vertebrate wildlife aurochs bison brown Buffalo europe european zubr black and white drawing head horn illustration sketch adult animals Asian asian elephant beast of burden bull elephant Ears eco Elephantidae Elephas maximus forest graze grazing hide Incredible India India Indian Elephant Ivory jungle nature pachyderm social trunk tusk tusks watching wild wild animal zoo Buffalo in Custer St Custer herd SD bone bones dead death horns old skull