ðə tæksˈɑːnəmi ʌv hˈaɪdɹətʃˌoʊɚɹˌɪniː ɪz kənfjˈuːzd bɪkˈʌz, ʌntˈɪl tˈuː θˈaʊzənd fˈaɪv, lˈɪvɪŋ kˌæpɪbˈɑːɹɹəz ænd ðɛɹ ɛkstˈɪŋkt ɹˈɛlətˌɪvz wɜː plˈeɪst ɪn ðɛɹ ˈoʊn fˈæmɪli, hˈaɪdɹətʃˌoʊɚɹˌɪdiː.
The taxonomy of Hydrochoerinae is confused because, until 2005, living capybaras and their extinct relatives were placed in their own family, Hydrochoeridae.