For as long as humans have been on earth, we have respected, deified, and worshipped animals. We celebrate their sacred powers and meaning, in rituals and festivities that continue to this day. Travel with us around the globe as we explore and explain our spiritual connection with birds and cats. In many cultures, for example, birds are symbols of spiritual ascent to another world and they are seen as messengers between gods and humans. Many traditions treat cats as sources of fertility, while other traditions treat them as accomplices in witchcraft.