Rachel: And it was Ernest Muhlbrat that first hypothesized that the velociraptor, when threatened, would expand its collar and emit a high-pitched noise to frighten off predators. Yes, Mr. Lewis?
Mr. Lewis: What kind of noise?
Ross: Just a high-pitched, intimidating noise.
Mr. Lewis: But like how?
Ross: Well, we don't know for sure. But in my head, it sounded something like this: [shrieking] Of course, this is just conjecture.