Unlike other reptiles, crocodilians have hearts with four chambers allowing complete separation of oxygenated and deoxygenated blood.
ʌnlˈaɪk ˈʌðɚ ɹˈɛptaɪlz, kɹˌɑːkədˈɪliənz hæv hˈɑːɹts wɪð fˈoːɹ tʃˈeɪmbɚz ɐlˈaʊɪŋ kəmplˈiːt sˌɛpɚɹˈeɪʃən ʌv ˈɑːksɪdʒˌɛneɪɾᵻd ænd diːˈɑːksɪdʒˌɛneɪɾᵻd blˈʌd.