Assertion: mole's thumb | /r/HasProperty | extra
Facets:
Source sentences:
text: Moles have an extra thumb on their paws to assist in digging, this is called “polydactyl.
text: Moles have an extra thumb on their paws to assist in digging, this is called “polydactyl.
text: A mole has an extra thumb.
text: They have stocky bodies, dark dense fur and extra thumbs, and they have evolved a variety of hemoglobin in their blood that allows them to breathe in more carbon dioxide than other species.