Evidence suggests Neanderthals, our closest evolutionary cousins, possessed complex cognitive abilities and a biological capacity for language, akin to modern humans. Genetic studies reveal they shared up to 99.7% of our DNA, and archaeological findings indicate they created art, wore clothes, and controlled fire, pointing to sophisticated communication.
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Interbreeding between Homo sapiens and Neanderthals is confirmed by genetic analysis showing Neanderthal DNA in modern human populations. Fossil evidence, like the Skhūl 1 child, further supports these interactions. While their communication abilities were likely advanced, differences in social connectivity may have contributed to their extinction around 40,000 years ago, with assimilated individuals passing on their genes to modern humans.
