Classify each of these mammals as either marsupial or placental
Marsupial: kangaroo, koala, wallaby, wombat, opossum, bandicoot, possum, glider
 
 Placental: cow, dog, sloth, rhinoceros, camel, horse, sheep, humans, elephant, manatee, anteater, cat, bat, pig, deer, giraffe, goat, alpaca, llama
 
 Marsupials give birth to undeveloped young that are carried in a pouch located on their mothers' abdomen until they're fully developed.
 
 Placental mammals carry a young the fetus in the uterus of its mother to a relatively late stage of development.