For this reason tadpoles can have horny ridges instead of Teeth, whisker-like skin extensions or fins.
fɔːɹ ðɪs ɹˈiːzən tˈædpoʊlz kæn hæv hˈoːɹni ɹˈɪdʒᵻz ɪnstˈɛd ʌv tˈiːθ, wˈɪskɚlˈaɪk skˈɪn ɛkstˈɛnʃənz ɔːɹ fˈɪnz.