Alligator Calling

Have you ever heard an alligator's courtship bellow? How about a threat call?
Click on the following links to hear a recording of each vocalization:
http://crocodilian.com/cnhc/images/!amis10a.wav
http://crocodilian.com/cnhc/images/!amis2b.wav

[Photos: D.F.G. Hailson]