They are mainly caused by constant rubbing on the walls of vivariums in apparent attempts to escape, resulting in trauma and abrasion of the skin of the rostrum. It is very commonly seen in [[Water Dragon|water dragons]] and other highly active species which are easily startled. | They are mainly caused by constant rubbing on the walls of vivariums in apparent attempts to escape, resulting in trauma and abrasion of the skin of the rostrum. It is very commonly seen in [[Water Dragon|water dragons]] and other highly active species which are easily startled. |