Assertion: echidna's brain | /r/HasProperty | fissured
Facets:
Source sentences:
text: The average brain volume is 25 ml, similar to a cat of approximately the same size; while the platypus has a largely smooth brain, the echidna has a heavily folded and fissured, gyrencephalic brain similar to humans, which is seen as a sign of a highly neurologically advanced animal.