Animals used in Fight Matches: Part II- Cockfighting and Hog-dogging

This is part II in animals that are used in fight matches. I was never truly aware of how prevalent and how severe the injuries are in animal fight matches. Below are two different types of animals used for fighting in the United States and around the world.

Cockfighting:
A little different than dogfights, but just as cruel, participants observe two roosters fight until their death. Birds are equipped with razor sharp blades that they wear around their legs when thrown in the ring. Roosters undergo rigorous and abusive training to make them more aggressive. When not in fights, these birds are usually living in poor conditions chained to a pole and/or in a small wire cage.

Hog-dogging:
I actually never heard of hog-dogging until I was doing some research on dogfighting. Hog-dogging is an event where a pit-bull and a hog get thrown into a "ring" or circle where the aggressively trained dog attacks and attempts to kill the hog. Hogs squeal and cry for their lives as the dog bites their head, snout, and body, sometimes even ripping off their body parts. If you have ever met a pig, you would know that pigs are very social and intelligent creatures, who are very similar to dogs. They have tails that wag and studies have shown that pigs are as smart as a three year old child. I found hog-dogging very disturbing. What are your thoughts on this event?

Sources:
 http://www.humanesociety.org/issues/hogdog_fighting/facts/hog-dog_bloodsport.html
 http://blog.dogsbite.org/2008/09/hog-dog-rodeos-pit-bulls-killing-pigs.html
 http://www.aspca.org/fight-animal-cruelty/cockfighting.aspx
 http://www.care2.com/news/member/876870911/831040