A Federation member species seen among the Enterprise crew and in San Francisco in Star Trek: The Motion Picture, described in production notes as telepathic herders with a gift for communicating with animals.
The Kazarites are humanoids with long, heavy-browed faces and thick dark hair, usually seen in rough homespun robes rather than uniform. They were among the group of new alien races designed by Fred Phillips and costumed by Robert Fletcher to fill out the crowds of Star Trek: The Motion Picture.
They appear in that film at the air tram station in San Francisco and in the recreation deck scene where Kirk briefs the assembled crew on the approaching V'Ger cloud. None of them speaks, and the name is not said in dialogue.
The name and background come from Fletcher's costume notes, which describe them as shepherds from a pastoral world, able to communicate with animals by thought and to move objects by will. Starfleet is said to employ them as specialists in the care of alien life.