The animal that was never mentioned in the Bible is the platypus.
While the Bible mentions a wide variety of animals, including familiar creatures like lions, eagles, and snakes, it does not include any mention of the platypus. This is likely due to the platypus being native to Australia, a region geographically distant from the areas where the Bible's stories are set.
The platypus is a unique and fascinating animal, known for its duck-like bill, webbed feet, and venomous spurs. Its existence was unknown to the ancient civilizations that shaped the Bible's narratives, and it remained undiscovered until the 18th century.