Familiars are spirits companions that bring power, knowledge, aid and friendship to certain individuals. They can also travel between worlds to help those individuals develop specific abilities.
It is possible to have many familiars in the course of a lifetime. Some have familiars or animal totems that accompany them throughout their lives. These animals reflect the individual's talents, strengths or challenges. They are also guardians that offer wisdom and protection to their chosen one.
It is the animals that chooses the individuals.