Preventative Measures: Heat Stroke can be prevented by taking certain precautions: Do not cage animals outdoors without adequate shade or water and at very high temperatures keep pets indoors. Do not leave animals in closed compartments like cars, exposed to the oven effect of the sun. Some animals will lie in a sunny window until to stuperous to move and may become subject to heat stroke. This is more prevalent in the northern regions. Take increased precautions with old, obese, or infirm animals.