Jogo do Bicho, which translates to "The Animal Game," is an illegal gambling game in Brazil. It was created in 1892 by Baron Joo Batista Viana Drummond, and it involves betting on a set of animals, each of which corresponds to a four-digit number.
The word cobra itself the Portuguese word for 'serpent' has its roots in Latin, and comes from colubra, a Latin word for a female snake. (No one is entirely sure where that Latin word has its roots, but a not-too-outlandish theory suggests it might be related to colus, the Latin word for a spinner's distaff.)