High Quality Content by WIKIPEDIA articles! The Yellow-footed Antechinus (Antechinus flavipes), also known as the Mardo, is a shrew-like marsupial found in Australia. ONe notable feature of the species is its sexual behavior. THe male Yellow-footed Antechinus engages in such frenzied mating that it's immune system becomes compromised, resulting in stress related death before it is one year old. THis is understood to be a survival adaptation for the species (and some other marsupials) on the basis that the females with young in pouch are free to forage without competition from the males in the dry summer environment of the Australian bush. THe Yellow-footed Antechinus was described in 1838 by George Robert Waterhouse, who noted its most distinctive feature in its species name flavipes, which means "yellow-footed". THe species has occasionally been combined with the Brown Antechinus (A. Stuartii).