Coevolution occurs with the newt increasing its toxic capabilities at the same rate as the snake further develops its immunity.
kˌoʊˌɛvəlˈuːʃən əkˈɜːz wɪððə nˈuːt ɪŋkɹˈiːsɪŋ ɪts tˈɑːksɪk kˌeɪpəbˈɪlᵻɾiz æt ðə sˈeɪm ɹˈeɪt æz ðə snˈeɪk fˈɜːðɚ dɪvˈɛləps ɪts ɪmjˈuːnᵻɾi.