Fatal dog experiments moving ahead despite criticism from Congress. Veterans Affairs is moving forward with invasive and some ultimately fatal experiments on dogs as part of their medical research program. The VA says the studies could help veterans suffering from spinal cord or breathing problems. The research varies across the country - in Milwaukee, research calls for removing sections of dogs’ brains to test neurons that control breathing; in Cleveland, using electrodes on dogs’ spinal cords; and in Virginia, implanting pacemakers and inducing abnormal heart rhythms. The animals would be subsequently killed by lethal injection.