The reasons why dogs twitch all over and cannot stand up:

1. First of all, the most basic symptom of epilepsy is whole-body convulsions, which is caused by damage to the central nervous system of dogs. Symptoms such as loss of consciousness occur.

2. When dogs are poisoned by food, they will also have whole-body convulsions. For example, organophosphorus poisoning will cause whole-body convulsions.

3. In the later stages of canine distemper virus, neurological symptoms such as whole-body convulsions may also occur.

4. When dogs suffer from severe heat stroke in summer, they may also have symptoms of whole-body convulsions.

Treatment methods for dogs that are convulsing and unable to stand up:

1. First place the dog in a safe and comfortable place and keep it cool and quiet.

2. Cover with a blanket and avoid touching the floor, walls and other hard objects to prevent trauma.

3. When the dog becomes stiff, the mucus in the mouth and nose should be removed in time during the period of stiffness to keep breathing smooth.

4. Remove feces and urine at the same time, give drinking water, but reduce food, let the dog rest in a quiet environment, and send the dog to the doctor as soon as possible.