Chihuahua episode. Any idea what this could be?

[BrettCThompson]

Hi,

Our family chihuahua, Zoey, had some sort of an attack earlier today. It was strange and she hasn't ever had one like this, so we're unsure of what this could be. My dad took a video of it, so we'd greatly appreciate any thoughts or insight this community might offer. The vet saw the video and suggested it could be related to anal glands needing to be expressed. Just looking for additional thoughts before taking her in.

Here is the link to the video. Thank you so much.

https://www.youtube.com/watch?v=zlug...ature=youtu.be

Brett