Vinegaroons
While some might not add this to mysterious animals lists over one about creepy animals, the Vinegaroon is certainly mysterious. Its look all the way down to what it can do is incredible to see. They have been described as land lobsters due to their pinchers. Some speculated it is related to scorpions. Usually found in places like Texas, Arizona, and Florida…the species is often seen in the summer. Essentially, summer rains bring them out of their hiding spots and act as a prime opportunity to search for food as well as a mate.
God help any humans that come around them, as well as any predator. They actually whip out a small tail from their abdomen that shoots out a form of acetic acid, which is described as having a “vinegar-like” smell. Hence the name of the creature. While its pinchers will hurt if they pinch you, the acid it shoots out is not poisonous to humans. Of course, it is still advised one does not get it in their eyes and that you wash off any surface the acid hit very well. It ranks as one of the most mysterious animals to science because it seems so unlike other spiders and so unique in the animal kingdom. At the same time, it only enhances evolutionary theories.