Puzzle book by Mirim Seo & Kelly Holohan (2012). They say: “Chomp puzzle books are designed to teach kids about basic food chains. Each puzzle introduces a different level of a food chain in its environment; Forest, Ocean, Arctic, Jungle, and Desert. All food chains include, producers, consumers, and decomposers and each plays a role in the chain. When completed, the puzzle shows the eating process.” Many more photos here
