The child was able to survive head trauma for several years, but suffered from permanent brain damage as a result.
Neanderthals may have interbred more widely than thought, if an inner ear with the species' traits are any sign.
The throat bone, which supports the root of the tongue and is needed for speech, was present in Neanderthals too.
Two million years ago in South Africa, a cross between humans and apes walked with a pigeon-toed gait, ate mostly veggies and spent a lot of time swinging in the trees.
How Neanderthals disappeared is still a mystery, but investigate some theories about how humans won.