That photo is deceiving. It looks like the boy is leaning on the creature, but he is actually kneeling down about six to ten feet behind it. The use of a wide-angle lens coupled with the perspective of him being much behind it makes him look a lot smaller, and the boar a lot larger, than in real life.
For you who hunt, here’s a labor-saving variation on deer-cleaning:
http://www.fieldandstream.com/fieldstream/hunting/photogallery/article/0,13355,1254741,00.html