Watch Free Online HD Moviesjoy. Cats are among the most feared and revered creatures on the planet. Their power, strength, and enigmatic nature have fascinated us for centuries. They are one of the most studied mammals in the world yet only now is their real identity being understood - from their incredible hunting abilities, to their unique physiology and remarkable behaviors. With nearly 40 different species, thriving in almost any environment, the cat is one of the most successful predators since the dinosaurs. Using the latest camera technology and working with leading scientists, we are able to tell the story like never before.