Marley the dog explores the firehouse.

Who will be the next firehouse dog? It's time for the Fire Dog Challenge at the Birdwell Island Fire Department! Clifford's friend Tucker wants to earn his Bravery Badge and become the firehouse dog. But some of the tasks are too scary. What will Tucker do? Can Clifford help his friend overcome his fears and win the Fire Dog Challenge?

"This inaugural entry in a series focused on women workers opens and closes with a cheer that should rev up young audiences: "Hey, yo!/ Firefighter Flo!/ You're a hero!/ You're a pro!" Zimmerman's rhyming narration remains at a fever pitch as Flo, a firefighter portrayed with brown skin, rouses the firehouse crew, portrayed with varying skin tones, in the middle of the night: "The smoke is thick!/ Flames have spread!/ Come on, crew. Out of bed!" With...