Cows Signal Volcanic Eruptions
Cows show distinct behavioral changes before volcanic eruptions or earthquakes. Farmers near Mount St. Helens in 1980 observed their cattle mooing loudly and moving erratically before the famous eruption. These large livestock animals can sense slight air pressure shifts or minor tremors that precede major events. Their herd mentality makes these reactions more visible to humans. Ranchers have learned to pay attention when their normally placid herds suddenly become restless without obvious cause.