Mr. Green Jeans, an 11-foot-long, 7-year-old Burmese python, slithered down Main Avenue in Spokane on Saturday with a large group of children in tow. He was one of the many attractions at the Mobius Grand Opening Street Festival. Mr. Green Jeans’ cohorts in the Creature Feature, provided by Rasmussen Reptiles, included a tortoise, a large lizard, a chameleon and a hedgehog.