Assertion: northern fur seal | /r/CapableOf | recognize each other's voices
Facets:
value: after 3–4 weeks
type: TEMPORAL
value: within a breeding season
type: TEMPORAL
Source sentences:
text: Studies of vocal exhanges between mother-pup pairs found that northern fur seals can recognize each other's voices within a breeding season (after 3–4 weeks), between breeding seasons (after 1 year), and even between several seasons (after 4 years).