The full moon is typically credited for inspiring howling wolves, but it turns out that another sky-related occurrence might cause a similar ruckus. Big storms bring with them a change in air pressure, so some experts believe that this weather adjustment hurts sensitive canine ears, causing them to howl in pain [source: Farmers' Almanac ]. It's hard to say for sure whether this is true, but anyone with sensitive ears who's ever driven through a mountainous region or flown with a head cold can vouch for the serious discomfort a change in air pressure can cause. Just to be safe, if you ever hear a wolf a-howling, it's a good idea to get undercover, both for protection from the rain, as well as the wolf itself – though they don't usually attack humans.
We do know that wolves howl for far more reasons than just a little ear discomfort. Scientists have pinpointed many functions for the occasional bay, such as attracting a mate, signaling alarm, communicating to the pack and just because they feel like it. You know what reason didn't make the cut, after careful study? The moon. That's right – there is no real evidence to show that the moon holds any fascination whatsoever for our vulpine friends [source: Richardson]. Now that's something to howl over!