The nonprofit organization said it hopes to raise awareness of veganism through a mix of pornography and graphic footage of animal suffering.
"We're hoping to reach a whole new audience of people, some of whom will be shocked by graphic images that maybe they didn't anticipate seeing when they went to the PETA triple-X site," said Lindsay Rajt, PETA's associate director of campaigns.
PETA has filed paperwork to launch its pornography site when the controversial new .xxx domain becomes active in early December, Reuters says.
A Facebook group, Real Women Against PETA, was launched after the organization paid for a billboard showing an obese woman with the message: "Save the Whales. Lose the Blubber. Go Vegetarian."