The disappearing ice cube (1993)

Fritz, J., Howell, S. M.

Abstract

Ice cubes are distributed across the floor, hidden in high plastic barrels (we call these igloos), tucked into corners of the cages, etc. As the animals come out, the excitement of the hunt starts and continues until the last ice cube is found. Hoarders clutch them to their chests, ... others fill their mouths and carry the cubes to the top of the cage, where they lay them down and watch carefully as the cubes get smaller and smaller. Still others have learned to skate through the puddles, making mad dashes in order to slide further and further. No detrimental effects have been found of providing the ice cubes.