What is the difference between a mammal and a marsupial?

2 Answers

gsenviro's profile pic

gsenviro | College Teacher | (Level 1) Educator Emeritus

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Marsupials reproduce and give birth to a partially developed offspring, whereas mammals give birth to a fully developed offspring.

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aishukul | Student, Grade 10 | (Level 3) Honors

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Mammals and marsupials are both warm-blooded and feed their babies with milk. However, mammals give birth to a fully developed baby while marsupials give birth to a partly undeveloped offspring that must be put in a pouch for full development. Also, mammals have only one sex organ while marsupials have two (male and female). 

Example of Marsupial: Kangaroos put babies in their pouches for full development.

Example of Mammal: Whales give birth to fully developed babies.