Humans believe they are the masters of this planet because of a myriad of traits we believe to be uniquely "human". As biological research deepens, we see that the traits we define as human may not be so rare after all.
Last Episode01x11 Homosexuality Aired: Mar. 12, 2004
According to scientific research, more than 450 different types of animals engage in homosexual activity. This documentary - which has since …
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