Titanus giganteus hails from the tropical rain forests of South America, and without these pictures for perspective, it doesn't necessarily look that unusual as beetle species go (at least not compared to some of the bizarre specimens we've been showing you lately). But when you realize that this thing can grow to the size of a small dog, that's when the creeps really set in.
Oddity Central has compiled some interesting info on the well-named Titan beetle, which is likely the largest known insect species in the world. While it's not known to be aggressive to humans, we wouldn't recommend teasing it too much, because its jaws are strong enough to snap your finger right off.
While the bug is a popular find among eco-tourists, much of its lifespan is still a mystery. Their larva have never been found, but based on holes eaten in the trees where they live, scientists have determined that the wormy offspring could be up to a foot long.
Here's some footage of the Titan beetle in its habitat, courtesty of the BBC documentary series Life in the Undergrowth: