Veterinarian

The Veterinarian shows up when one of the crew's animals needs medical attention, offering the brisk, faintly weary professionalism of someone used to treating stranger creatures than dogs and cats in a thirty-first-century clinic. He's a background fixture rather than a driving force — practical, unsentimental, there to deliver a diagnosis and move the plot along.

David Herman, Futurama's reliable utility player, gives even a walk-on like this a specific comic texture — a dry, put-upon competence that suggests years of dealing with far worse than a sick pet. It's a small role, but it lands because Herman never plays it as filler; he plays it as a real person mildly inconvenienced by the plot.