Start with a clear, high-pitched whistle. Use diaphragm pressure to create a pure tone at 2000-3000 Hz. This is your opening statement of presence.
Continue rising in pitch to peak around 3500-4000 Hz. Hold this peak for 1-2 seconds. This shows strength and dominance. Maximum air pressure here.
Let the pitch drop naturally as air pressure decreases. Smooth descent back down to around 1500 Hz. This is the most natural-sounding part.
Add 2-4 guttural grunts at the end: "uh-uh-uh-uh". These show aggression and dominance. Space them 0.2-0.3 seconds apart. This is what makes it a challenge.