Superman superhero Krypto the Superdog is back after his dazzling big-screen debut, this time in an online animated film short that will also be a part of the Superman digital and physical releases.

Every New Yorker’s Kryptonite is a really cute dog. Dozens of heroic hounds soared to Hudson Yards Friday to compete in a Krypto the Superdog look-alike contest — but only one pooch took home the red ...