Humans have long used clues to forecast the weather. While it’s unlikely that a groundhog woken from its den in February can tell with any accuracy how long winter is going to last, it appears that some animal behaviors can provide some indication of the weather to come. A number of traditional beliefs about animals and weather are somewhat based in scientific fact. Animals have a more heightened sense of smell and hearing than humans, so they can pick up on environmental cues faster. This is why some animals seem agitated before major storms and earthquakes – they can hear them coming or feel the changes in air pressure. Cows…