Does anyone have any clue what is happening here? She did this several times throughout the night. Would be in a dead sleep and wake up doing this. It’s so short and fast it was hard to video and I don’t know how to even explain it to the vet. And I’m not trying to go to an emergency vet and get ripped off but I’m a bit worried and will obv do what I have to!! She does not appear to be in any pain or discomfort… only when she is doing this. This is the video below.