Assertion: walrus's calf | /r/HasProperty | weaned
Facets:
Source sentences:
text: Because ovulation is suppressed until the calf is weaned, females give birth at most every two years, leaving the walrus with the lowest reproductive rate of any pinniped.
text: Before the calves are weaned, they live with the herd of female walruses.
text: After calves are weaned, females are placed in the mother’s herd while males join male groups.