Wild Life (Protection) Act, 1972
The Chief Wild Life Warden shall be the authority who shall control, manage and maintain all sanctuaries and for that purpose, within the limits of any sanctuary,-
(a) may construct such roads, bridges, buildings, fences or barrier gates, and carryout such other works as he may consider necessary for the purposes of such sanctuary;
(b) shall take such steps as will ensure the security of wild animals in the sanctuary and the preservation of the sanctuary and wild animals therein;
(c) may take such measures, in the interests of wild life, as he may consider necessary for the improvement of any habitat;
(d) may regulate, control or prohibit, in keeping with the interests of wild life, the grazing or movement of 32[live-stock].