How do we know that a species has definitely gone extinct (as opposed to just being extremely rare/elusive)?
In: Biology
Basically, when we don’t see any members of the species for a while. They could be extinct, or they could be good at hiding. The Zanzibar leopard is an example that is or was thought to be extinct, but there is some evidence to suggest they may still be alive and just really good at living around humans without being seen.
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