In the Bloody Roar series, the majority of Zoanthropes are primarily mammals and feline. Whether or not a feline alter-ego is the dominant type is uncertain; the games do not go farther into the background of Zoanthropes outside of the main characters in-game. Zoanthropes seem to be a natural occurrence however as many of the characters seem to be born with the ability. It also appears the ability can be passed on through a family bloodline as evident by Yugo gaining his abilities from his father who was a natural Zoanthrope.