African Dragon :D The males (pictured) display the red on their throats and tail fins when in season. When they feel evenly matched, they resort to good old knocking heads.
Whoo! First full Zbrush critter done.
Rendered in Zbrush with some post editing in PS
Download for larger view :D
Link
Tanathy
Absolutely detailed models! Are you thinking to use them somewhere?
I can imagine in some games :)