Causes of trembling dog legs:

1. Low blood sugar. Dogs will suffer from hypoglycemia due to hunger. When symptoms of hypoglycemia occur, the dog’s legs will keep shaking. The owner needs to replenish energy for the dog in time.

2. Fever. When a dog has a fever, its legs will be shaking all the time, accompanied by symptoms such as coughing, sneezing, loss of appetite, and lethargy. The owner needs to reduce the dog's fever in time.

3. Nervous. Some dogs are very timid and will tremble when there are sharp irritating sounds or when they are scolded or scolded by their owners. The owner needs to calm down the dog's emotions.

4. Cold. When dogs feel particularly cold, they will shiver to restore some of their body temperature. The owner should help the dog keep warm in time.

5. Pain. When a dog's leg is injured and causes pain, the dog will shiver non-stop, and when the dog is severely deficient in calcium, it will also cause weakness and trembling in the dog's legs. The owner should take the dog to the hospital in time for symptomatic treatment.