Shaking body while at rest

[smaurine82]

My rabbit does not seem to be panting and he's not been scratching himself. When walking around he seems fine but when he lies down and appears relaxed, his entire body is shaking, most notably his back, though it includes his head. This is a new behavior that just started today. His personality/ temperament is curious and active. He's 2 years old and I've owned him for about one week. We let them roam around like house rabbits.

 

[Watermelons]

Can you video it for us? How much shaking is this shaking? Is it in sync with him sniffing or anything?

 

[smaurine82]

If he does it again I will but he's not done it since. So weird. The vet also said she'd need a video.