Matt Reeves tells Den of Geek, "So the secret that we had was that the monster was a baby. Having just been born it was going through separation anxiety and had no idea where its mother was and was freaking out and was in a completely foreign place, didn’t understand a thing and that that would be sending it into a kind of infantile rage. Which was very frightening, but the thing that was also frightening to me was the idea that not only was it going through an infantile rage but, because it was suffering from this separation anxiety, it was spooked. It was really afraid. And as the military started shooting at it, I started thinking, like if you were attacked by a swarm of bees for the first time, it wouldn’t necessarily kill you but you’d be terrified, you’d be like, "What are these things doing?!" And for me there’s nothing scarier than thinking of something that big that’s spooked. Like if you’re at the circus and suddenly the elephants are spooked, you don’t want to be anywhere near that, you’ll be crushed..." Click here for the full interview.