Hippopotamus
Known to eat plants for the majority, its massive size alone makes the Hippo a dangerous animal to encounter. In fact it is known to attack humans in the wild. In most attacks, there was no known provocation from humans. They are so strong that they can damage a whole vehicle with just a few blows. Their mouths open wide and their bodies are so dense that bumping an SUV built for the wilds will do them no harm.
