WWF takes a strong stance for animal rights. They are not afraid to veer into the realm of the controversial and it shows in the creative direction of their advertising campaigns. 

Powerful messages that leave a deep impact are often shockingly inspirational. And this is why WWF’s campaigns often generate a lot of discussions and active participation in making the world a better place for everyone. 

WWF Animal Tattoo 1
WWF Animal Tattoo 2

Source: deMilked