Question

why did not early man domestic animals like elephant,tiger,lion etc or birds like eagle and owl

Answer 1

The domestication of wild animals, beginning with the dog, heavily influenced human evolution. These creatures, and the protection, sustenance, clothing, and labor they supplied, were key factors that allowed our nomadic ancestors to form permanent settlements. Though to many urbanites livestock are as distant a part of reality as country music, without them, humans would never have been able to form cities at all. Take a look at the organisms that gave rise to some of our present animal companions.