Dog Dayz at Scott Carpenter Park Pool in Boulder, CO..

BOULDER, CO - SEPTEMBER 15: Tamara Marks plays with her Australian shepherd Jax, flying in the air, and Miles, left, a Border Collie mix during Dog Dayz at Scott Carpenter Park Pool in Boulder, CO on September 15, 2014. The pool turned into an aquatic dog park for two weeks in September. The event has been running strong for nearly a decade and saw close to 2,000 dogs come throughout the gate in past years. It runs from Monday September 15 through Sunday September 28 and is a great way to spend a warm afternoon with your best friend. (Photo By Helen H. Richardson/ The Denver Post)