Wildlife officials this morning received a report of a bear chasing an off-leash dog on the Mesa Trail east of the National Center for Atmospheric Research.

At about 12:30 p.m. today, Boulder rangers received a report of an "aggressive" bear chasing a dog on the Mesa Trail near Mallory Cave.

Colorado Parks and Wildlife spokeswoman Jennifer Churchill said a woman on the trail reported her dog -- which was not on a leash -- started chasing the bear and that the bear then began chasing the dog. The woman said the bear eventually gave up.

Rangers searched the area, but did not find the bear. Because it was an animal interaction, Churchill said no action would have been taken against the bear.

Churchill said the incident was a reminder for residents to keep their pets on a leash while walking on trails.

"Wildlife is out there, and if your pets chase it, that can create a sticky situation," Churchill said. "Make sure to keep your pets under control. There can be bears and mountain lions and even moose in the foothills."

Contact Camera Staff Writer Mitchell Byars at 303-473-1329, byarsm@dailycamera.com or twitter.com/mitchellbyars.