Answer:
I have a powerful bite and live in rivers and swamps. People are often afraid of my big jaws. What am I?
Looks like a hippo crossed with a unicorn.
Long slim and slender. Dark as homemade thunder. Keen eyes and peaked nose. Scares the Devil wherever it goes.
I am an animal named after the animal that I eat.
Face with a tree, skin like the sea. A great beast I am. Yet vermin frightens me.
My days are numbered.