Assertion: echidna's body temperature | /r/HasProperty | good news
Facets:
value: for their life span
type: OTHER
Source sentences:
text: Of all the mammals in the world, echidnas have the second lowest body temperature (after the platypus), which is good news for their life span – on average, they’ve been known to live for up to 50 years in captivity, and 45 years in the wild.