Assertion: penis | /r/HasProperty | retracted into sheath
Facets:
value: by the retractor penis muscle
type: MANNER
value: in use
type: OTHER
value: in most mammals
type: OTHER
Source sentences:
text: In most mammals other than Primates the penis is retracted into a sheath when not in use.
text: A stag's penis forms an S-shaped curve when it is not erect, and is retracted into its sheath by the retractor penis muscle.