I thought the flat area on the front of the scrab's head to be photosensitive somehow...enough for the invisibility power to work...if it zeroed in on heat, whether Abe was invisible or not wouldn't make any difference.
They're fighting animals and maybe the lack of specialized eyes takes care of the vulnerability that most other animals have of being incapacitated by being poked in the eye.
[ January 11, 2002: Message edited by: Niteowl ]
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