RT @UberFacts: Killer-whale mothers often stay with their adult sons for their whole lives. Killer-whale mothers also help their sons find mating opportunities, so they're more likely to become grandmothers.

Killer-whale mothers often stay with their adult sons for their whole lives.

Killer-whale mothers also help their sons find mating opportunities, so they're more likely to become grandmothers.

— UberFacts (@UberFacts) April 9, 2019

from Twitter https://twitter.com/viriniki