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 has killed the goose to no purpose. It was also one of several fables applied to political issues by the American illustrator Thomas Nast. Captioned "Always killing the goose that lays the golden eggs", it appeared in "Harpers Weekly" for March 16, 1878. There the picture of the baffled farmer, advised by a 'Communistic Statesman', referred to the rail strike of 1877. The farmer stands for the politically driven union members whose wife and children sorrow in the background. The Goose That Laid the Golden Eggs "To kill the Goose That Laid the Golden Eggs" is an idiom used of