The one and only animal, that was not mentioned in the Bible is the cat. Some people say that the cat was mentioned in the original scriptures, but then deleted by some of the early writers of the Bible because they associated the cat with the Egyptians. In those days the Egyptians held the cat in high esteem, even worshiped them, and because of that, the Christians deemed the Egyptians pagans.
Another opinion is that cats were not considered a “domestic” animal. Even today, the cat is not fully domesticated…in the sense that a house cat will “turn wild” if left to itself, and that cat’s kittens will be totally feral if born on the street or in the fields and barns without a lot of human contact.