My little pug is 16 months old and she is the sweetest thing during the day. However, at about 6 months she started attacking us while we are sleeping. It's quite scary, she totally freaks out and jumps on us and bites & scatches pretty hard. Sometimes we are able to get her off from us before she does any damage, but other times we are toolate and I am accumulating quite a bit of scars from her. I know she really does not mean to do it, because once she really wakes up she is over it and falls back asleep. When she attacks I just hold her tight for a few seconds until she calms down. What is wrong with her? Would the only remedy be to medicate her, and with what? I have taken her to the vet and they don't really know what to do.