Mammals breathe with lungs and have a muscular diaphragm separating the thorax from the abdomen which helps them draw air into the lungs.
mˈæməlz bɹˈiːð wɪð lˈʌŋz ænd hæv ɐ mˈʌskjʊlɚ dˈaɪəfɹˌæm sˈɛpɚɹˌeɪɾɪŋ ðə θˈoːɹæks fɹʌmðɪ ˈæbdəmən wˌɪtʃ hˈɛlps ðˌɛm dɹˈɔː ˈɛɹ ˌɪntʊ ðə lˈʌŋz.