Hi Friend, I have had many ferrets, and one little boy acted like Nala after his shots. He was bouncy and full of life up till the shot. After we came home from the vets. into his hammock he went and he would go to sleep. After a day and a half, of him in the same position and still asleep, I would handle him. He would come around, start eating and pooping, but it was not good. Bless you for your efforts, and my prayers are with you. I'm not a vet, but, judging on my own experience,I would say it was the shot. My boy came out of it, but it happened everytime I had his shots were updated. Marilyn [Posted in FML issue 5002]