Human beings and animals equally have the same basic desire for happiness or satisfaction. This is common to all sentient beings. The unique thing about us, however, is our intelligence. The desire to attain happiness, pleasure and satisfaction mainly through the five senses is not a uniquely human thing; there is not much to distinguish us from animals in this regard. What does distinguish us from animals, however, is our ability to use our faculty of intelligence in our quest to fulfill our natural desire to be happy and overcome suffering. It is this ability to judge between the long- and short-term consequences of our behavior and actions that really distinguishes us from animals; utilizing our unique human qualities in the right way is what proves us to be true human beings.
His Holiness the Dalai Lama
Taken from the free ebook “Illuminating the Path to Enlightenment”