Just retread original post. Why didn't the dog think it was a toy before now. If she has had it for 5years it sounds as if some smell that the dog detected happened in the quilt. What did you do just before. The dog chewed. New washing powder or something . Even a new aerosol could cause problem. My youngest dog is having medication the first given by vet no problem, second was you must have this. She is back on the first and jumps up to have it as. If it is a sweet. Smell is all we can think is different.