ZME Science on MSN9mon
Why is human childhood so unusually long? The answer may lie in baby teethAnimals need different sizes and numbers of teeth at different ages. If you think about trying to fit an entire adult set of ...
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How many teeth do dogs have? (And why it matters)But how does the number of teeth a dog have compare to the ... When they are around 3 weeks old, their baby teeth start to come through and continue to come through until they are around 3 to ...
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