Eastern Bloc countries such as the Soviet Union had high rates of population growth. In 1917, the population of Russia in its present borders was 91 million. Despite the destruction in the Civil War, the population grew to 92.7 million in 1926. In 1939, the population increased by 17 percent to 108.
Causes of Chronic Vomiting in Dogs Chronic vomiting can be caused by diseases of the gastrointestinal tract or can occur secondary to other systemic diseases. It is important to try to establish the cause of chronic vomiting.
Chronic Dog Vomiting. The above really is a discussion on what to do for acute onset vomiting. If your dog has been vomiting for more than 24 hours, or has intermittent but ongoing vomiting there are many different causes and a vetâs advice is needed to work out what is going on. It could be as simple as implementing a diet change, or it could be a sign of something more serious (like all those extra-gastrointestinal causes).