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Oophagy (egg eating) is the practice of embryos feeding on eggs produced by the ovary while still inside the mother's uterus. Oophagy is thought to occur in all sharks in the order Lamniformes and has been recorded in the bigeye thresher (Alopias superciliosus), the pelagic thresher (A. pelagicus), the shortfin mako (Isurus oxyrinchus) and the porbeagle (Lamna nasus) among others.• Oophagy is also used to refer to more general egg-eating behaviours such as those practiced by some snakes or the differential oophagy practiced by the Polistes biglumis species of wasp.
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