The life of a monkey is full of ups and downs. When we watch their behavior we get the sense that their emotional lives may share something in common with our own.

Joy, anger, grief, love -- all reside within elephants. Through years of research, scientists have found that elephants are capable of complex thought and deep feeling.

The whole family gathers around for an emotional welcoming of Echo's newborn elephant.

Happiness, sadness, anger, fear, love, hate -- emotions play a pivotal role in our lives. But do they loom large in an animal's world as well?

Intriguing surprises await viewers Inside the Animal Mind a three-part NATURE miniseries.