elk

The elk are at their most spectacular right now, bugling and competing for attention, but they are also unpredictable

Male elk can be particularly unpredictable and aggressive at this time of year, as they compete for attention from females

Elk are particularly unpredictable at this time of year, and a bluff charge is a sign that you're too close for comfort

It's the middle of elk rutting season, and one large bull took a dislike to a park ranger's vehicle at Mammoth Hot Springs

Rutting season is just beginning, and bull elk are likely to be more unpredictable and aggressive than usual

Bears and bison aren't the only animals that deserve plenty of space and respect