Events of mycophagy by Brazilian native mammals are not often reported in literature, and the identity of the consumed fungal species is not always available. Therefore, the aim of this article is to report two field observations of mycophagy in Southern and Northern Brazil, involving the black-capped squirrel monkey ( Saimiri boliviensis ) and the Azara’s agouti ( Dasyprocta azarae ). The primates were observed eating ascomata of Ascopolyporus sp. ( Cordycipitaceae, Hypocreales ), while the rodents were consuming immature stages (‘eggs’) of Itajahya galericulata ( Phallaceae, Phallales ).