In "The Tip of The Zoidberg" both the Professor and Mom claim that Zoidberg is an excellent doctor for aliens. But if that is true why didn't he know that Leela wasn't an alien before she found her parents and learned she was a mutant?

  • Note that "alien" means "anyone but another Decapodian"
    – RDFozz
    Feb 1, 2019 at 20:50

2 Answers 2


Zoidberg is known for:

  • Having excellent medical knowledge of aliens, considered by Mom

    "to be the best in the business, for his price level."

  • Claims to have little to no experience with human anatomy often appearing to not be able to tell male from female.

  • Despite this handicap, has manage to perform successful transplants of limbs and even heads on occasion.

  • Overall, Zoidberg's ability with humans (and thus mutants, such as Leela) to vary significantly in quality and is generally untrustworthy as a resource on the subject, despite his bizarre string of successes from time to time.

  • 3
    I always wondered if Mom's comment was more about the "for his price level" than "best in the business"..
    – Izkata
    Jan 27, 2013 at 6:29
  • 2
    You know Mom. She was always one for compliments. But it does seem like she could have had two meanings. Jan 27, 2013 at 6:55
  • 1
    Yep. At one point he couldn't even tell humans and robots apart, so his knowledge is fragmented, to say the least.
    – Mr Lister
    Jan 27, 2013 at 8:28
  • 1
    He seems to be a great surgeon, transplanting heads and so on, but hardly the most knowledgable. "Oh right, the bones. Always forget about the bones."
    – Mac Cooper
    Feb 22, 2014 at 20:34
  • Zoidberg's an idiot?
    – user35971
    Dec 22, 2014 at 22:02

There are plenty of planets in the galaxy, and an infinite number in the universe. Zoidberg might have simply not known what species Leela was and been good at treating several alien species, but not humans or Leela's then-unknown species.

  • No, there are no infinite number of universes. Just two :)
    – Yasskier
    Jan 31, 2019 at 23:36
  • 1
    @Yasskier Two parallel universes. But an awful lot of perpendicular ones Feb 1, 2019 at 12:07

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