The Nina Ottosson Dog Worker is an interactive round puzzle game board for dogs with a rotating wheel in the center, swiveling fish fins, and sliding blocks that hide treats in the tray’s small treat compartments.Features:Level 3 challenge Nina Ottosson treat-hiding dog puzzle gameFeatures a center spinning wheel that hides and reveals treatsDesigned with swiveling fish fins and sliding blocks that hide treatsNo BPA, PVC or phthalates or removable parts for safe playCan be frozen to make frozen treats and can be used for slow-feedingColour: GreenDimensions: Approx. 34.5 cm (diameter), 5cm (height)