What do cougar, toucan and jaguar have in common? Not much, apart from all being loanwords from Guaraní, Paraguay’s second language (its first language being Spanish). "Paraguay" itself is a Guaraní word that means "place of great water", probably because of the numerous rivers and tributaries that criss-cross it. Why am I suddenly interested in Paraguay? Because of England’s first World Cup game tomorrow, of course!
Guaraní on omniglot
Guaraní on wikipedia