have you ever tried to crack a shell of an oustorige using your hands?
Sure its possible but it hurts.
Ok they had sharp claws and beeks though

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GCS/S d(+) s+:+ a--- C++(+++)>$ W+++>$ L>+ M+>++ w++ P+>++ tv@ PS b+ DI+ G e-> h! r-- !z+

~Jorge Schrauwen