Dogs can take a splash, wag for a treat, and have a sniff or two at Lone Tree’s Wag N’ Romp on Saturday, September 12 from 10 a.m. to 2 p.m. at Cook Creek Pool. Owners can check out the latest and greatest in pet products from local pet vendors. Dogs can enjoy a swim in the pool and/or test their skills in an agility course. Pups can compete for “Best Swimmer,” “Loudest Bark” and “Best Dressed,” with contests starting promptly at 11 a.m. Two-legged kids can participate in crafts. More than 500 dogs have participated in the past so be sure your pooch is a social creature. 8711 Lone Tree Pkwy., Lone Tree, 303-790-7665.