Hello, my dog suddenly lay on the ground with its hind legs twitching, and the sides of its belly also twitched; it wouldn’t get up or respond when called, and it vomited. What’s going on?

Hello. Based on your description, the dog suddenly showed symptoms such as convulsions and vomiting. This situation is mainly considered to be caused by poisoning, canine distemper complications, epilepsy, nerve damage, brain parasite infection, and other reasons.

It is recommended to take it to a veterinary clinic for examination promptly after the convulsion symptoms ease a bit, and adopt appropriate treatment measures based on the cause. If the dog was previously infected with the canine distemper virus, it is very likely a canine distemper aftereffect.