From King County Parks:
King County Parks and the King County Sheriff’s Office are joining forces to ensure the continued safety of all visitors to the County’s vast network of parks, trails, and open space.
Sheriff’s deputies are now patrolling parks, including those with natural surface trail networks like Cougar Mountain Regional Wildlife Park, as well as regional trails like the Sammamish River Trail, to emphasize compliance with leash laws.
Per King County Code 7.12.410, dogs must be on-leash in all park and trail facilities, unless in a designated off-leash area. Deputies will issue citations to violators.
Especially during these busy summertime months, it is important for dogs to be on leash when visiting parks and trails. Not only does it reduce potential injury to your best four-legged friend from unexpected encounters with wildlife or other dogs, but it also decreases the likelihood that your dog will ingest plants or berries that could make it sick.
Dog owners are encouraged to visit King County’s Marymoor Park, which features a 40-acre off-leash dog area that consistently ranks as one of the region’s best, and additional off-leash areas can be found in parks throughout Seattle and surrounding cities.
By following this simple rule, all park and trail visitors can have enjoyable experiences, whether they have two legs or four.