Friday DOGGIE SWIM: The Florissant Dog Park will host the fourth annual Doggie Swim from 6:30 to 8:30 p.m. Friday and from 10 a.m. to noon Saturday at the Koch Park Family Aquatic Center, 305 Howdershell Road. The cost is $10 per dog plus its owner, and $3 for each additional guest. All dogs must wear an identification tag and be on a leash unless swimming. Current, written vaccination records, …