There are only two types of animals — those which can swim and those which cannot. Why are humans the only creature that has the optional swimming feature they can turn on?
In: Biology
Why do humans have to “learn” to walk and crawl? Most mammals are born knowing how to walk, and if they aren’t on their feet right after birth, the usually manage it within a few weeks. Humans rarely walk before a year.
It would seem that humans differ in a number of ways.
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