Lucian looked to the side at Caius then.
"You lost control because you've always lived a lie," he said, "You know that, don't you?"
Caius smiled lightly.
"It's essential for my survival actually," Caius said, "But yes, I do."
The Feral nature he had slipped into is actually 'normal' for a Vampire. It's essentially a Vampire's most basal instincts, given free rein. This usually happens during feeding so one can be focused on their target and be efficient in the hunt.
A Vampire can keep up the 'Feral' nature indefinitely. In fact, it's supposed to become a part of them. It only robs one of control when it has been starved for long. When it has been suppressed but hardly any Vampire bothers with suppressing their nature. For a couple of reasons.
One, they just don't hate what they have become;
