Loading...

Clash of the Dinosaurs: The Defenders - Duckbill Sound Machine

280,500 views

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Dec 11, 2009

Clash of the Dinosaurs - The Defenders airs December 13th at 8pm E/P only on Discovery! http://dsc.discovery.com/videos/clash...

Endowed with an advanced auditory system, Parasaurolophus used its ability to communicate with complex low-frequency calls as a primary means of defense.

Loading...

Advertisement
When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...