I had one like that and it was gas on his tummy....I gave a couple of small drops of baby malcon and it worked. Sometimes they can get gas on their tummies when they change to regular food...might give it a try it won't hurt the pupppy. Just give a drop of two on the tongue or this other gas and I can't think of it right now...he wouldn't stop crying after feeding but just couple of drops of the anti gas for babies worked and that was after a $300 vet bill and it was gas!!!
Donna
__________________ Brooklynn's Yorkshire Terriers |