A few questions about growth and adding piggies.

Well firstly i was wondering up until what age do piggies stop growing? Im curious because mine are smaller then most and they are both about 1 year old.
Also they sometimes fight (often nothing serious), but If i were to get another piggy, a young one, if that might help them get along, or would that make the situation worse?
thanx.

I don't know what age piggies stop growing at. I'd guess maybe 1-2 years old age. Pig are all different sizes. I wouldn't be concerned with the size of your pig unless they seem malnourished or small because of a sickness.

I wouldn't worry about adding another pig. It might disturb the relationship of your two. As long as there is no bloodshed I wouldn't worry about the fighting.