How is dog intussusception caused?

Dog intussusception is mainly caused by excessive activity and spasmodic peristalsis of the intestines. It is often seen in parvovirus infection, canine distemper, colds, enteritis and parasites. Stimulation by parasitism, etc.; ingesting a large amount of food or cold water can increase gas in the intestines, stimulating local intestinal violent peristalsis, causing the proximal intestine to intrude into the distal intestine; intestinal tumors can also cause intussusception.