Why animals do sex ?

 

To recognize the subject we have to know first just a few things to be

able to be aware of the matter.

Firstly all the creatures in that planet do a special 

Reproductive system to keep its kind by using the sex, 

even the plants do sex .

You will say that some plants reproduce by it self having 

the both of the sexual system of females and males.

In Fact the animals do sex to maintain its kind , and in some times they just

do sex to have fun and reach orgasm , and some kinds of animals

after the males of a group enter a fight,

the males do sex with his females or any female of the group.