Hello, thank you for contacting our service. I am sorry for the late reply.
Has he been vaccinated against rabies regularly? Has he ever had contact with any wild animals or other dogs around him? Dogs with rabies have a swollen throat, which prevents them from swallowing, salivating, and drinking water. He may also lose interest in his surroundings and he may pant. Neuroinflammation can make him very sensitive. Rabies is a disease that can be transmitted to all mammals, and there is no cure. If he is infected with rabies, he needs immediate treatment or isolation. Or, these symptoms may be caused by another problem. Anorexia, panting, and unresponsiveness are clues that indicate that his health is very poor. I recommend that you make an appointment with your veterinarian as soon as possible. Thank you.

I can barely touch him, he pants really hard, not drinking water, he can barely move, he has no reaction to anything toys and to people, he drools and just sits still
What are causes & treatment?

Body trembles, drooling, panting, extreme sensitivity to touch