Although in many frog species, females are larger than males, this is not the case in most species where males are actively involved in territorial defence.
ɔːlðˈoʊ ɪn mˈɛni fɹˈɑːɡ spˈiːsiːz, fˈiːmeɪlz ɑːɹ lˈɑːɹdʒɚ ðɐn mˈeɪlz, ðɪs ɪz nˌɑːt ðə kˈeɪs ɪn mˈoʊst spˈiːsiːz wˌɛɹ mˈeɪlz ɑːɹ ˈæktɪvli ɪnvˈɑːlvd ɪn tˌɛɹɪtˈoːɹɪəl dᵻfˈɛns.