The rescue had just gotten them that week so there was no time to really see a difference. They could not give me any estimate on the age because the people they acquired them from didn't know anything either. They have not changed at all since I've had them.@amorrissett I tend to guess from their nails or body shape. But even then it's just an estimate.
If the have sharp nails then they tend to be young.
And if they are starting to become more triangle shaped rather than round then it's a sign that they're losing muscle mass and getting older.
But there are pigs out there that don't follow the rules so it's all just guess work.
How long did the rescue have them? And did they grow at all in their care?