We'd Best Wait Until it Attacks
Orc reinforcements are arriving. Oh good, just in time. The orcs' general, a human, returns with the reinforcements and he is seen riding a bipedal, eyeless reptile.
'Do we know what that is?'
'Make a Dungeoneering Knowledge roll.'
'22.'
'You know it's a Destrachan.'
'And what do I know about Destrachan?'
'That it's a bipedal, eyeless reptile.'
'I obviously have a keen memory for details.'