&gt; Most species have sex extremely conservatively<p>That&#x27;s what my ex-girlfriend claimed, because she never actually observed animals behaving, &quot;the animals are so peaceful.&quot; Then as she was in the park, she was witness of, named with the human-related names, a violent prolonged gang-rape of one female duck by the group of male ducks.<p>The female duck was wounded, repeatedly and observably. My girlfriend was deeply shocked.<p>By the way, a male duck has a 20-cm  corkscrew-shaped penis and he can pull it out in a third of a second:<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=qwjEeI2SmiU" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=qwjEeI2SmiU</a><p>And penises of cats are barbed, evolved and now necessary to make pain to females:<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=3UVw7cgv36A" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=3UVw7cgv36A</a>