Frédéric spent two weeks in the Museum of Vertebrate Zoology (MVZ) at the University of California Berkeley (USA) in the context of a collaboration with Chris Emerling (Post-doc) and Michael Nachman (Director of MVZ) funded by the France-Berkeley Fund. Thanks to the curators of mammalogy Jim Patton, Eileen Lacey and Chris Conroy for authorizing the loan of specimens from ant-eating species.