Puffer fishes have a unique adaptation: their teeth are fused into a beak-like structure that grows continuously. In the wild, they wear these teeth down by chewing on hard foods, like shellfish or nibbling on hard corals. We offer our dog-faced puffer dental plaster enrichment. He has been trained using positive reinforcement to swim to a target. In this video, a keeper places an orange target underwater and offers the pufferfish the dental plaster covered with a special gel diet prepared for o