Egg embryo is adequately developed it hatches, i.e. breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark, and was in size. Whale shark eggs typically hatch within the mother. At and up to , the ostrich egg is the largest egg of any living bird, though the extinct elephant bird and some dinosaurs laid larger eggs. The bee hummingbird produces the smallest known bird egg, which weighs half of a gram (around 0.02 oz). Some eggs laid
The Goose That Laid the Golden Eggs The Goose That Laid the Golden Eggs "To kill the Goose That Laid the Golden Eggs" is an idiom used of an unprofitable action motivated by greed. It refers to one of Aesop's Fables, numbered 87 in the Perry Index, a story that also has a number of Eastern analogues. Many other stories contain geese that lay golden eggs though certain versions change them for hens that lay golden eggs. Avianus and Caxton tell different stories of a goose that lays a golden egg, where other versions have a hen, as in Townsend: "A cottager and his wife had a