First off, the all-time favorite for my five year old is Crustacean Vacation, by Brian Benoit,where a crabby family goes to the shore. It's full of one-liners and clever lines, and not a single one fails to amuse. What is Grandma up to? What happens when little crabs (crablets) meet the infamous arcade game, the Claw? It's simple: "A gamewith a crane that both scuttles and grabs, Was plainly designed for the mind of a crab". Spoiler alert: as in real life, no one wins The Claw.
What about the Luge de DeLuge? The shark that runs that tattoo parlor?
My son enjoyed him so much that we looked for more by the same author, Melanie Watt. We found Chester, an annoying and bossy cat that thinks he's an artist. He's clearly gunning for a Caldecott.