Portland - Escape the cold, damp weather of Portland to a Chihuahua- (and other small-breed dogs-) friendly oasis at Dog Days. Chihuahuas and other small-breed dogs along with their people enjoy off-leash indoor play area, pet-related vendors, photo booth, tropical cocktails, food, and fun contests including best costume and doggie limbo. Tickets $10/advance; $15/day of. Details OregonHumane.org.