Is that a Rhino calf? The different color peaked my curiosity, which, by the way is easily 'peaked.' Helen mentioned "pig", but the tail doesn't seem right for a pig.
Larry, Helen is right, this member of the swine family is called Potamochoerus porcus (Red river hog, also known as the bush pig): http://en.wikipedia.org/wiki/Red_River_Hog