Among leaf litter frogs in Panama, frogs that actively hunt prey have narrow mouths and are slim, often brightly coloured and toxic, while ambushers have wide mouths and are broad and well-camouflaged.
ɐmˌʌŋ lˈiːf lˈɪɾɚ fɹˈɑːɡz ɪn pˈænəmˌɑː, fɹˈɑːɡz ðæt ˈæktɪvli hˈʌnt pɹˈeɪ hæv nˈæɹoʊ mˈaʊðz ænd ɑːɹ slˈɪm, ˈɔfən bɹˈaɪtli kˈʌlɚd ænd tˈɑːksɪk, wˌaɪl ˈæmbʊʃɚz hæv wˈaɪd mˈaʊðz ænd ɑːɹ bɹˈɔːd ænd wˈɛlkˈæməflˌɑːʒd.