Orca mothers forgo future offspring to care for their full-grown sons
8 February 2023
Female orcas in the north Pacific hunt and share food with their adult male offspring, and this seems to limit their chances of having more calves
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Premium
Female black widow spider mates with and eats multiple males
29 April 2021
Female black widow spiders often mate with and eat only one male – but in one species the female will mate again, meaning males die even though they may not father offspring
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When presented with a choice between a subordinate and dominant male, female sheep choose the less aggressive rams – which helps increase genetic diversity among lambs
