I approach my character with the question: What would an animal think? How would an animal respond? A lot of times, it's quick action and no fear, and sometimes it's irrational fear. You don't always know. ↗
One of the scary things is that, when you're a kid, you look at your dad as the man who has no fear. When you're an adult, you realize your father had fear, and that you have it, too. ↗