1.   Conversely, co-operative feeding and care increases the likelihood of rearing those young that are produced.

2.   Females benefit from having several male partners because they all help to rear her young.

3.   Only the female can guarantee her parenthood, and to her descends the task of single-handedly rearing the young.

4.   Watched a documentary on how wolves rear their young.

5.   And both male and female help rear their young.

6.   As a communal breeder beholden to the assistance of others in rearing her young, a woman must be a true political animal.

7.   After breeding, the males depart quickly, and take no role in rearing the young.

8.   The immigrants promptly began nesting, breeding and rearing their young.

9.   The hen, who gets no help from the male in rearing her young, has to periodically leave the nest to forage for food.

10.   The hinge on which the story turns is San Ignacio Lagoon, Baja California, where the gray whales come in winter to calve and start rearing their young.