Can I add Animal killing in a casual game Thread

Hi guys, I want to ask if it is normal to add killing animals in a casual game.

I am working on a game and wondering how to handle this.

here is the link to a playable demo and you tube video.

Please suggest me how can it be done.

you can play it here

Kookylab.com

Latest progress video

Youtube.com

Yes,this news is all fake,the author of this mod was a Spanish and just a gamer.He has no relationship with ISIS,as you can see he also did some mistaken on some of the ISIS uniforms and logo in his mod. And now he dicided to change the name of his mod to "the enemies of the Iraq and Syria".I don't think a ISIS suppoet would do this..