Snakes have been observed yawning and gaping when trying to swallow African clawed frogs (Xenopus laevis), which gives the frogs an opportunity to escape.
snˈeɪks hɐvbɪn əbzˈɜːvd jˈɔːnɪŋ ænd ɡˈeɪpɪŋ wɛn tɹˈaɪɪŋ tə swˈɔloʊ ˈæfɹɪkən klˈɔːd fɹˈɑːɡz zˈɛnoʊpəs lˈiːvɪs, wˌɪtʃ ɡˈɪvz ðə fɹˈɑːɡz ɐn ɑːpɚtˈuːnᵻɾi tʊ ɛskˈeɪp.