Two divers look for Leopard Shark eggs during the annual inventory in Hagenbecks zoo in Hamburg, Germany January 12, 2018.  (Photo: VCG)

Zookeepers measure a baby Crocodile Tail Lizard during the annual inventory in Hagenbecks zoo in Hamburg, Germany January 12, 2018. (Photo:  VCG)

A northern caiman lizard is being attracted with a snail to step on the scales during the annual inventory at the Tierpark Hagenbeck zoo in Hamburg, northern Germany, on January 12, 2018. (Photo: VCG)

A zookeeper looks for Northern Caiman Lizard during the annual inventory in Hagenbecks zoo in Hamburg, Germany January 12, 2018. (Photo: VCG)