Hlukanisa ngasinye salezi zilwane ezincelisayo njengeziyi-marsupial noma i-placental
Izilwane ezinemithambo: i-kangaroo, i-koala, i-wallaby, i-wombat, i-opossum, i-bandicoot, i-opossum, i-glider  I-placenta: inkomo, inja, i-sloth, ubhejane, ikamela, ihhashi, imvu, umuntu, indlovu, i-manatee, i-antelope, ikati, amalulwane, ingulube, ihhashi, i-alpaca, i-llama  Ama-Marsupial azalela amazinyane angakakhuli athwalwa esikhwameni esisesibelethweni sikamama wawo aze akhule ngokugcwele.  Izilwane ezincelisayo ezinesidumbu zithwala umntwana osanda kuzalwa esibelethweni sikanina esigabeni sokuthuthuka esiphuze kakhulu.