A study found that based on teeth mark evidence, mother killer whales are more likely to support their sons against other orcas rather than their daughters.
Male Killer Whales Protected By Post-Menopause Mothers eurasiareview.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurasiareview.com Daily Mail and Mail on Sunday newspapers.
By Stephen Beech Killer whale calves are real mommy’s boys as raising sons is so exhausting for them, and they often can’t nurture any more offspring, reveals a new study. Researchers found that each living son cut a mother’s annual likelihood of having a calf that survives for at least a year by around 50