Pork in itself is as harmless to dogs as chicken, beef or any other meat. However, there is a slight risk of your dog being infected with trichinosis by eating pork. Trichinosis, also known as trichinellosis, is a worldwide, food borne disease caused by an intestinal roundworm, uncommon in the United States. Both humans and pets who eat raw or undercooked meat of infected animals can develop the disease. Undercooked or raw meat of infected animals contains the roundworm. The disease can lead to muscle soreness and pain together with swelling of the upper eyelids in mild cases but can lead to more severe symptoms.