Everyone loves big cats, but what do we really know about them? There is far more to these charismatic and misunderstood animals than just being the world's top predators. Cats have their tender side - they are emotional and intelligent while being social and are devoted parents. Filmed over 600 days in 14 countries, featuring 31 species of cats, this ground-breaking three-part miniseries uncovers the secret lives of big cats and introduces behaviors captured on film for the first time, using the latest camera technology and scientific research. From the solitary bachelor snow leopard in the Himalayas, to the elusive swamp tiger of South Asia, to a remarkably efficient Californian bobcat that is blind in one eye, NATURE brings these animal superstars out of the shadows and reveals how cats survive and thrive in all four corners of the globe.