The Life of Animals | Titan Beetle | Adults can be up to 6.5 inches (16.7 cm) long. Of all known bugs, is the Hercules beetle Dynastes hercules, can sometimes grow into those huge males to 7 inches (more than 17.5 cm) longer than the Titan, but the Hercules beetle males have a huge horn on the pronotum and thorax make up about half its total length. As such, the body of the beetle titanium is substantially greater than that of the Hercules beetle. In it, an adult specimen of American entomologist, the late Frank Hovore found and returned to Oxford University. A famous "life-size" photo of a supposed larva of the beetle, which appeared in the magazine National Geographic, a whole page to fill, but it was cervicornis from another kind of bug, possibly Macrodontia. The adults defend themselves by hissing in warning, and have sharp spines and strong jaws.