He appears to be ruptured. Have seen it in domestic hogs on more than one occasion. Usually not life threatening, they carry on like nothing's wrong, if left alone. And, like that one, simply appear to have one really large set of gonads!!
Does present problems when castrating however; has to be stitched back up or their intestines slip out, if you stitch it then it doesn't want to drain properly, and needless to say hogs ain't real high on payin any attention to "keep it clean and sterile!" For that reason most are left in tact, fed out, and put in the farmer's freezer, or thumped in the head and put in the trash pit. Feedlots don't want them, so they bring next to nothing in the sales ring.
