Assertion: brown bear's cub | /r/CapableOf | open their eyes
Facets:
Source sentences:
text: By the time spring comes, the cubs have opened their eyes and grown teeth and fur; the new family is ready to venture outside the den.
text: The cubs will open their eyes when they are approximately 4 weeks old and they will be able to walk at 6 weeks.
text: Cubs weigh 13 ounces at birth, and will begin walking at four days of age, and open their eyes three days later.