Assertion: guinea pig's tail | /r/HasProperty | visible
Facets:
Source sentences:
text: Guinea pigs don’t have visible tails.
text: For guinea pigs that do have visible tails, their tails are usually only between 1-1.5 inches (2.5-3.8 cm).
text: Sometimes this gland is visible by a greasy substance that is secreted just above his bottom or about where a tail would be if a guinea pig had a visible tail.