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Nephilengys malabarensis male and female showing extreme sexual dimorphism where the much smaller male is resting on the female's abdomen after escaping from female cannibalism via emasculation during copulation. | Qi Qi Lee
Animals

Nonad' Spiders Lose Gonads to Fight Better

Castrated males are better fighters because they are not weighed down by their manhood.

June 13, 2012
3:00 AM EDT