Yellowstone National Park officials are reminding the public that elk calving season will begin soon in the Park. Cow elk are much more aggressive towards people during the calving season and may charge or kick. Visitors are urged to stay alert. Look around corners before exiting buildings or walking around blind spots. Cow elk may bed their calves near buildings and cars. People should always keep at least 25 yards from elk, and if an elk charges, find shelter in your vehicle or behind a tall, sturdy barrier such as a tree as quickly as possible.