Via Monterey Bay Aquarium, whose staff prepared these ice enrichment treats with non-toxic food coloring and clamshake frosting especially for their resident sea otters! The aquarium writes:
Our sea otter aquarists are always creating fun enrichments for our resident otters, including hiding treats in blocks of ice for the otters to crack open and pry out! These ice-and-food puzzles allow our rescued otters to stimulate natural behaviors by cracking open the treats, much like they would do with shellfish in the wild.
