Much to my suprise this morning to check on all my piggys and put them in the run i went to get sue and saw next to her 4 very small babys also 2 no longer alive in the corner 1 baby i checked cant really walk properly and his eyes are mainly closed is it necessary to distress them all by a vet visit or is he just the so called runt of the pack and just smaller then the rest any advice please x