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SEND_PUNS_PLZ t1_iuidzik wrote

Why are their ears so big if they hear with their feet

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broken_soul696 t1_iuiepop wrote

Regulating their body temperature

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Vergenbuurg t1_iujn0zh wrote

Same reason for the fennec foxes' astonishingly adorable huge ears, correct?

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InsuranceToTheRescue t1_iuik5ob wrote

Cooling. They don't sweat or pant so the large, thin ears provide enough surface area to cool the blood as it circulates through.

On a similar note, that's also why many male mammals have testicles. Normal body temp is too hot for sperm.

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