I've rescued a pig, and she came from a house that also had 3 boys (unneutered). I don't know that they were all in the same cage, because when I saw them...they were stacked on top of each other in front of Petco in itty bitty BITTY cages.
The concern is that she may be pregnant. I have considered spaying her, to avoid/abort babies and contributing to overpopulation...however, if she is not pregnant, I don't want her to have surgery.
A few things come into play...I've done some pig research here and at Guinea Lynx, and have also talked with members there. She has something in her eye that may age her older than I had initially thought. So...giving birth will likely be hard on her...if she is indeed older.
She the least dominant of the two (I have one other pig)...but she has a bigger belly...but is seemingly smaller body wise and in 'thickness'. Now, being fed an appropriate diet will also have her gain weight, so I don't know that weighing her every week will be accurate enough to tell.
I don't want to xray her once a week either and wait until we see bones to know for sure.
I'm just looking for more opinions on what you all would suggest I do?