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.
1 Vomiting can lead to chemical burns and possible breathing of the caustic material into the lungs (aspiration). 2  Never induce vomiting in a pet who is already vomiting. 3  Never induce vomiting if your pet is unconscious, weak, having trouble standing or walking, or showing other symptoms. Never induce vomiting in a pet who is already vomiting. 2  Never induce vomiting if your pet is unconscious, weak, having trouble standing or walking, or showing other symptoms. 3  Never give more than two doses of hydrogen peroxide, and never exceed 3 tablespoons of hydrogen peroxide.