Pigs are extremely intelligent animals, second only to dolphins, I believe. Contrary to popular opinion, they are very clean animals with virtually no odor. They have a slightly sweet smell, kind of like a ham. LOL.
Virtually everything they do is directed towards getting food.
I heard a story about a pig who opened a refrigerator with his nose, while his owner was at work, and ate a 8 pound canned ham (opened). Talk about cannibalism.
The pig was sick for a couple of days because of all the salt in the ham.