According to the all knowing wiki:

A variety of substances are considered as harmful (haraam) for humans to consume and, therefore, forbidden as per various Quranic verses:

Pork meat (i.e., flesh of pig)[Qur'an 2:173]
Blood[Qur'an 2:173]
Animals slaughtered in the name of anyone but Allah. All that has been dedicated or offered in sacrifice to an idolatrous altar or saint or a person considered to be "divine"[Qur'an 2:173] [Qur'an 5:3]
Carrion[Qur'an 2:173]
An animal that has been strangled, beaten (to death), killed by a fall, gored (to death), savaged by a beast of prey (except that which you may have slaughtered while it was still alive)[Qur'an 5:3]
Food over which Allah's name is not pronounced (or at least not in a name other than Allah)[Qur'an 6:121]
Alcohol and other intoxicants[Qur'an 5:090]

Or as we like to say, not a hope in Hell.

Exactly what is wrong with eating Pig? Or an animal that was killed by strangulation? It all seems bizarre to me, rules for rules sake.