Mark your – and your pup's – calendar for Saturday, October 27. The Traverse City Dog Park is hosting its grand opening from noon to 3 p.m. The Dog Party will celebrate its off-leash canines big and small, plus their bi-ped owners, and the park's generous donors and hard-working volunteers. Expect a ribbon cutting, the unveiling of a donor banner, a variety of vendors offering adult and child activities and treats, a pet photographer and a Halloween dog costume contest and parade (owners are encouraged to dress up, but it's not required). Don’t have a pooch? No worries. Humans without pups are very much welcome too.