potbelly pig urine

Question
Is potbelly pig urine in grass in any way harmful to small children playing in the same grass?

Answer
No more harmful than urine from any other animal. Of course it's a bad idea to let a child eat or play with grass wet with urine from any animal. There's nothing in pig urine that can be transmitted to people, so once the spot has a chance to evaporate it should be fine.