Assertion: platypus | /r/IsA | monotreme
Facets:
Source sentences:
text: It is classified as a monotreme, which means that it lays eggs and incubates them like a bird or reptile, but it feeds its young with milk, so it is considered a mammal.
text: Platypuses and echidnas are the only two mammals in the world classed as monotremes which means that they lay eggs instead of giving birth.
text: The platypus is also classified as a monotreme, which is a specific type of mammal.