I have a young boar that has been used for breeding, but lately his penis won't extend. it comes out of the sheath about 1/2 " but it feels like it's knotted up inside the sheath...is that possible ? you can feel it " bunched " up inside and dispite my efforts to help it will not extend. He can and does ejactulate , could he do that if it was in a knot ? If it is just curled around in there why does just the end stick out. Sorry for all the graffic images but he was an exspensive boar ( $1000 ) for me, and I've never incountered anything like this....what do you guys think the deal is ?