The outside of the skin is shed periodically mostly in one piece, in contrast to mammals and birds where it is shed in flakes.
ðɪ aʊtsˈaɪd ʌvðə skˈɪn ɪz ʃˈɛd pˌiəɹɪˈɑːdɪkli mˈoʊstli ɪn wˈʌn pˈiːs, ɪn kˈɑːntɹæst tə mˈæməlz ænd bˈɜːdz wˌɛɹ ɪɾ ɪz ʃˈɛd ɪn flˈeɪks.