Assertion: tree frog's gland | /r/CapableOf | cover entire top of their heads
Facets:
Source sentences:
text: Older members of that species have very large parotoid glands, which cover the entire top of their heads and droop over their tympana.
text: The older magnificent tree frogs can be distinguished from White's tree frogs by the presence of very large parotoid glands, which cover the entire top of their heads and droop over their tympana.