Feral

The hunter is being seduced by his prey... Mexico, 1850. One fateful night Noah Diaz is ravished by a bold woman who transforms him into an immortal lion. Now he is a wealthy man who owns an underground sex club where supernatural beings can indulge in no-holds-barred sensual play. Though Noah has scores of willing victims, it is the thrill of the hunt he desires... Jenny Lincoln runs a big cat rescue operation that can't stay afloat-until a donor comes through with the condition that she goes to his club.
Both Noah and the club at first frighten her but eventually thrill her. It's clear that she is Noah's prey, but once she gets a taste, it is Jenny who wants more...