Hello all. We just received 18 new fluffy butts. One of them was falling over and violently scratching at the side of her head (both sides). It was a violent display flopping around (this earned her the name Spaz). After a couple hours Spaz pulled through and is doing well. A few hours later, another one started to do the same thing. The only difference between the two is the second one was more lethargic. Since the first one pulled through, we thought the other one would do the same. Unfortunately, we lost the second over night. What has caused this and what can a person do to prevent/cure this? Thank you in advance.