The Louisiana SPCA’s Carnival is back, bringing color, music, and wagging tails to New Orleans on Saturday, October 18, from 1 to 4 p.m. at 1700 Mardi Gras Blvd. This isn’t just a day of fun — it’s a celebration with purpose. Every laugh, cheer, and wagging tail helps support the programs that protect animals, strengthen families, and keep pets and people together. Carnival is a chance for familie…