Sherlyn Chopra is advocating animal birth control as part of a programme by People For Ethical Treatment of Animals (PETA). "Let us spread the good word of ABC - Animal Birth Control. Why? The bottom line is that animals would if they could, but sadly or unfortunately they cannot use condoms, so it is upon us to sterilize them. It is our responsibility," Sherlyn said here Tuesday. Meanwhile, Sherlyn also revealed that in almost 15 days, a press conference will be held for her film 'Kamasutra 3D'.