My favorite had a bad case of sour crop. Was treated by a vet and made a miracle recovery. Then her crop got bad again after the last dosage. She's on another round of medication. But, each day seems worse. Her crop is still big, very lethargic and won't eat or drink on her own. Also, she has green diarrhea. I still have a little hope she will turn around. Never dealt with sour crop. So, not sure how bad it gets. If she won't get better I would like to save her pain and have her put down.