Tricerhinoceros

Also known as Emela-ntouka by native people of central Africa, this is the largest of modern rhinoceroses, almost similar in size to an African elephant (though the Indricotherium was much bigger than the largest land mammal alive today, the murambi). Many people thought it was a surviving horned dinosaur because of its horn on its snout and a long, reptilian-like tail, but to their surprise, when scientists tested their DNA, it's confirmed they're actually rhinoceros species. Unlike the long-extinct horned dinosaurs, it doesn't have a frill nor a beak (but rather a mouth like all rhinoceros species), its ability to give birth to live young, and it is semiaquatic. Just like some African rhinoceros species, Tricerhinoceros can protect its territory from elephants.