I'm not saying their dirty. But in my experience they are not the best company as the conversation is about as fulfilling as is usually obtainable from a particularly antisocial teenager.
The occasional squeal will probably add an extra dimension to the discussion, but it's all grunting to me. Of course it all depends on the breed (of pig) in question I suppose.
Ah now there you have it , mine are Gloucester Oldspots , a particularly intelligent breed , now if you tried having a chat with a Saddleback you'd be in trouble , they just hate civilised conversation of any kind