Work up a sweat for a pet-friendly cause at this longstanding 5K in support of the Seattle Animal Shelter Foundation. Thousands of strays and surrendered animals benefit from the foundation's programs and initiatives each year. There are lots of ways to raise a paw for their efforts, including a virtual "run/walk anywhere" option allowing participants to join in on the fun from their own favorite trail. After the main event at Seward Park, don't miss Pet-a-Palooza's vendors, musical performances, and more—I'm guessing there will be some epic dog watching, too.