Assertion: estrus | /r/CapableOf | last for 9 days
Facets:
Source sentences:
text: The estrus lasts for 9 days but it can range from 3 to 21 days.
text: The estrus lasts around 9 days.
text: Oestrus is the next stage, also lasting around 9 days, where eggs are released from ovaries and the oestrogen levels decline while progesterone levels rise.