This Australian cover
includs tow stamps, one of them represent the Australian Railway and the other for
the short-beaked echidna:
Despite its spines, the
short-beaked echidna is preyed upon by the dingo, Tasmanian devil, fox, various
snakes and lizards, and various birds of prey. The goanna, the generic name for
any of several Australian monitor lizards of the genus Varanus, is a common
predator of the echidna.