Well, a Caecum is just an organ and like other dog organs it also gets affected by some internal factors and easily attacked by several external factors such as the poisonous food and polluted water. The problem can be diagnosed by some symptoms like vomiting and diarrhea. The intestinal worms take over the nutrients moving into the guts and cause irritation. However, before becoming your dogs own vet, kindly give a visit to any professional. These symptoms can also be seen because of a viral infection in the intestinal tract called 'Reovirus'. This infection in dogs is a contagious illness caused by a virus from the Reoviridae family, leading to severe stomach and intestinal suffering by the infected dog. The illness commonly manifests with signs of vomiting, pneumonia. Once developing, this will create an inflammation leading to the disease.