Where did the term ‘Piggy Bank’ come from?

Ever wonder why we don’t have ‘Doggie Banks’ instead of ‘Piggy Banks’?  The term comes from a reddish clay used for making pottery in the Middle Ages, called ‘pygg’.  Money was often kept in jars or pots made of pygg.  This type of pottery was called ‘piggery’, which was also a place where pigs were kept.  The words got mixed up, and by the eighteenth century people were making pig-shape banks.  Now go be a Biz Kid and put some $$ in your pig!