Some use inertial feeding to help them swallow the prey, repeatedly thrusting their head forward sharply causing the food to move backwards in their mouth by inertia.
sˌʌm jˈuːs ɪnˈɜːʃəl fˈiːdɪŋ tə hˈɛlp ðˌɛm swˈɔloʊ ðə pɹˈeɪ, ɹᵻpˈiːɾᵻdli θɹˈʌstɪŋ ðɛɹ hˈɛd fˈɔːɹwɚd ʃˈɑːɹpli kˈɔːzɪŋ ðə fˈuːd tə mˈuːv bˈækwɚdz ɪn ðɛɹ mˈaʊθ baɪ ɪnˈɜːʃə.