Here's what's going on today (Sunday, May 6): Pack up your pooch and head out to Forsyth Park for the Savannah Humane Society's annual Doggie Carnival, from noon to 4 p.m. It's the final day for the Tall Ships Challenge at the Savannah riverfront. Sartre's No Exit is onstage for a 3 p.m. Collective Face matinee at Muse Arts Warehouse. And the award-winning Savannah Children's Choir gives a free concert at St. Paul's Episcopal Church, at 4 p.m.