There are six or seven stray dogs in my family, and now they are all dead one by one. Is there a pet doctor who can answer them? No, is it canine distemper or poisoning?

According to the symptoms, it is probably rabies. I advise you to get rabies vaccine immediately. Canine distemper is not this symptom, but trembling, tears, listlessness and fever! Use 84 disinfectant to increase the dose, spray it every day, and don't keep a dog for half a year! Everyone who comes into contact at home is vaccinated, because it will spread through saliva!