Dogs stick out their tongues in the early stages of canine distemper because canine distemper can infect the respiratory tract in the early stage. In the later stages of canine distemper, the tongue will turn white. Dogs suffering from canine distemper will show signs of fatigue, anorexia, elevated body temperature, upper respiratory tract infection, and symptoms such as sticking out the tongue and panting. Canine distemper is a highly contagious and easily contagious infectious disease in dogs. It is the natural enemy of dogs.

Dogs infected with canine distemper virus will excrete the virus in their urine within 3 months Dog urine is the source of infection of canine distemper. The main transmission route is direct contact between sick dogs and healthy dogs. It can also be infected through respiratory tract through air droplets.