CNN  —  Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has partnered with CNN to drive awareness and education around key sustainability issues and to inspire positive action. Pangolins have two claims to fame: first, that they are the world’s only scaly mammal, and second, they are one of the most trafficked animals globally . Beyond that, most