He's jealous of your abs.
You gotta tap the circle button just as the exclamation point comes over its head. Do it at least once after every mission and the poogie will eventually befriend you (It'll have a lot of hearts). If you happen to do that, you can carry him around and your controller will vibrate when you're near an item. If you drop it there, the poogie will get the item for you.
Why does she think the pig hates her? I can't see anything different then how the dog I'm watching acts.
In the game when you pet the pig he'll headbutt you and knock you over.
Um, what's the problem?