mˈɑːɹk dˈiː. hˈɔːsɚ bˈɔːɹn ɑːktˈoʊbɚ twˈɛnti fˈaɪv, nˈaɪntiːnhˈʌndɹɪd fˈɪfti nˈaɪn ɪz ɐn ɐmˈɛɹɪkən ˌɛvəlˈuːʃənˌɛɹi baɪˈɑːlədʒˌɪst ænd ɐ ɹᵻsˈɜːtʃɚɹ ɪn pɹˈaɪmeɪt bᵻhˈeɪvjɚ, ˈænɪməl kɑːɡnˈɪʃən ænd hjˈuːmən bᵻhˈeɪvjɚ ænd nˈʊɹɹəsˌaɪəns.
Marc D. Hauser (born October 25, 1959) is an American evolutionary biologist and a researcher in primate behavior, animal cognition and human behavior and neuroscience.