Is it not unfair to say that just because animals use their genitals in certain ways that means those genitals were evolved for that purpose?<p>There is more logic than &quot;you put the penis in the vagina&quot; that implies that the two are designed for procreation. All you seem to have here is that animals touch eachother&#x27;s genitals sometimes. Not sure how that has any evolutionary implications. Even less sure that there is more than some reactionary evidence to show otherwise as well.