All creatures begin their lives in eggs. They grow large, hatch and then disappear. They are touch-sensitive though, so if you or your norns play with them, they will not hatch unless put in the incubator!
For some reason eggs in C3 and DS do not have this problem, although they can be put in suspended animation by submerging in water or by being put into the inventory. The gender of a baby norn in C3 and DS depends on the season in which its egg was laid - spring eggs favour girls, and autumn eggs favour boys - summer and winter give an even split. C3 grendels like to sniff eggs out and take them home to the Grendel Jungle.
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