Hello & welcome, I am Dr. B, a licensed veterinarian and I would like tohelp you today. I do apologize that your question was not answered before.Different experts come online at various times; I just came online, read aboutyour situation, and wanted to help.
Again I do apologize that my colleagues could not aidyou sooner. If you would still like assistance, can you tell me:
How long has he had these signs?
Do you mean he has tremoring or just a non-specific intermittent shake? Any seizures?
Has he a fever?
Any access to dangerous plants, heavy metals, chemicals, or risk of supplement/drug overdose?
Are his gums pink or pale/white?
Does he have any voluntary movement or feeling (you may need to poke his back leg with a needle) of his legs?
Do his limbs see flaccid or rigid?