What sight could be more moving than a mother nursing her baby ? What better icon could one find for love, intimacy and boundless giving ? There’s a reason why the Madonna and Child became one of the world’s great religious symbols.
To see this spirit of maternal generosity carried to its logical extreme, consider Diaea ergandros, a species of Australian spider. All summer long, the mother fattens herself on insects so that when winter comes her little ones may suckle the blood from her leg joints. As they drink, she weakens, until the babies swarm over her, inject her with venom and devour her like any other prey.
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http://aeon.co/magazine/science/pregnancy-is-a-battleground-between-mother-father-and-baby/