Wild animals risk their lives for one another all the time, but why? Scientists say they might not be as selfless as we think.
How Evolution Creates Hybrid Animals –
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Why Humpback Whales Protect Other Animals From Killer Whales
“Two humpback whales were already on the scene as the killer whales, or orcas, attacked the grays. But after the calf had been killed, around 14 more humpbacks arrived-seemingly to prevent the orcas from eating the calf.”
“In evolutionary biology, an organism is said to behave altruistically when its behaviour benefits other organisms, at a cost to itself. The costs and benefits are measured in terms of reproductive fitness, or expected number of offspring. So by behaving altruistically, an organism reduces the number of offspring it is likely to produce itself, but boosts the number that other organisms are likely to produce.”
When Animals Help Each Other
“Cooperation within and between different animal species has its advantages for all parties involved.”
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